gnu: Fix whitespace issues in Emacs package descriptions.

This mainly addresses `double-space after sentence end period' and `trailing
white space' issues.

* gnu/packages/emacs-xyz.scm (emacs-bookmark-plus, emacs-dhall-mode,
emacs-aio, emacs-ligature, emacs-gdscript-mode, emacs-epithet, emacs-flx,
emacs-gnosis, emacs-citar-org-roam, emacs-trashed, emacs-ivy-hydra,
emacs-citre, emacs-waveform): Fix description.

Change-Id: I1b2690e1d1440fde57498e5bf37f641d0011a098
Signed-off-by: Vagrant Cascadian <vagrant@debian.org>

gnu/packages/emacs-xyz.scm

@@ -4787,10 +4787,10 @@ rather than the contents of files.")
      (list emacs-elfeed emacs-skewer-mode))
     (home-page "https://github.com/skeeto/emacs-aio")
     (synopsis "Async/Await for Emacs Lisp")
-    (description "@code{aio} is to Emacs Lisp as @code{asyncio} is to
-Python. This package builds upon Emacs generators to provide functions that
-pause while they wait on asynchronous events.  They do not block any thread
-while paused.")
+    (description "@code{aio} is to Emacs Lisp as @code{asyncio} is to Python.
+This package builds upon Emacs generators to provide functions that pause
+while they wait on asynchronous events.  They do not block any thread while
+paused.")
     (license license:unlicense)))
 
 (define-public emacs-async
@@ -6687,11 +6687,11 @@ a command.")
       (home-page "https://github.com/mickeynp/ligature.el")
       (synopsis "Typographic ligatures in Emacs")
       (description
-       "This package maps ordinary graphemes (characters) to fancy
-ligatures, if both your version of Emacs and the font supports it.  With this
-package you can control where Emacs must display ligatures. That is useful if
-you only want a subset of the ligatures in certain major modes, for instance,
-or if you want to ensure that some modes have no ligatures at all.")
+       "This package maps ordinary graphemes (characters) to fancy ligatures,
+if both your version of Emacs and the font supports it.  With this package you
+can control where Emacs must display ligatures.  That is useful if you only
+want a subset of the ligatures in certain major modes, for instance, or if you
+want to ensure that some modes have no ligatures at all.")
       (license license:gpl3+))))
 
 (define-public emacs-olivetti
@@ -15845,11 +15845,11 @@ provide the historic behavior of @code{flet}, as well as
       (home-page "https://github.com/oantolin/epithet")
       (synopsis "Rename Emacs buffers with descriptive names")
       (description
-       "This package provides a function---@code{epithet-rename-buffer}---to rename
-the current buffer with a descriptive name. The name suggestion is governed by
-the @code{epithet-suggesters} hook variable: each hook should return either a
-name suggestion or @code{nil}, they are called in turn and the first non-nil
-suggestion is taken.")
+       "This package provides a function---@code{epithet-rename-buffer}---to
+rename the current buffer with a descriptive name.  The name suggestion is
+governed by the @code{epithet-suggesters} hook variable: each hook should
+return either a name suggestion or @code{nil}, they are called in turn and the
+first non-nil suggestion is taken.")
       (license license:gpl3+))))
 
 (define-public emacs-eterm-256color
@@ -25472,11 +25472,10 @@ citations.")
     (propagated-inputs (list emacs-citar emacs-org-roam))
     (home-page "https://github.com/emacs-citar/citar-org-roam")
     (synopsis "Emacs package to provide tighter Citar and Org-Roam integration")
-    (description "\
-Out-of-box, Citar provides default support for file-per-note bibliographic
-notes that are compatible with Org-Roam v2.  This package integrates directly
-with the Org-Roam database, and provides the following additional features to
-Citar note support:
+    (description "Out-of-box, Citar provides default support for file-per-note
+bibliographic notes that are compatible with Org-Roam v2.  This package
+integrates directly with the Org-Roam database, and provides the following
+additional features to Citar note support:
 @itemize
 @item multiple references per note
 @item multiple reference notes per file
@@ -39195,8 +39194,8 @@ day calendar.  It is integrated with the Emacs calendar and diary.")
     (synopsis "View and edit system trash can in Emacs")
     (description "Open, view, browse, restore or permanently delete trashed
 files or directories in trash can with Dired-like look and feel.  The trash
-can has to be compliant with freedesktop.org. In Emacs, you can trash files by
-deleting them with @code{(setq delete-by-moving-to-trash t)}.  This package
+can has to be compliant with freedesktop.org.  In Emacs, you can trash files
+by deleting them with @code{(setq delete-by-moving-to-trash t)}.  This package
 provides a simple but convenient user interface to manage those trashed
 files.")
     (license license:gpl3+)))
@@ -40512,9 +40511,9 @@ files, providing syntax highlighting and indentation rules.")
     (home-page "https://github.com/abo-abo/swiper")
     (synopsis "Additional key bindings for Ivy")
     (description
-     "This package provides the `hydra-ivy/body' command, which is a
-quasi-prefix map, with many useful bindings.  These bindings are
-shorter than usual, using mostly unprefixed keys.")
+     "This package provides the @command{hydra-ivy/body} command, which is a
+quasi-prefix map, with many useful bindings.  These bindings are shorter than
+usual, using mostly unprefixed keys.")
     (license license:gpl3+)))
 
 (define-public emacs-cwl-mode
@@ -41917,8 +41916,8 @@ The main features of Wanderlust:
       (home-page "https://github.com/sachac/waveform-el/")
       (synopsis "Display a waveform and use it to navigate")
       (description
-       "This package displays a waveform of a sound file. You can then play or
-navigate through it.")
+       "This package displays a waveform of a sound file.  You can then play
+or navigate through it.")
       (license license:gpl3+))))
 
 (define-public emacs-project-x