gnu: Fix typos.

* gnu/packages/emacs-xyz.scm (emacs-piem)[description]: Fix use of "This
  packages".
* gnu/packages/tex.scm (texlive-hardwrap)[description]: Fix spelling of
  "arbitrary".
* gnu/packages/cran.scm (r-shinymanager)[description]: Fix spelling of
  "authentication".
* gnu/packages/lisp-xyz.scm (sbcl-utils-kt)[description]: Fix spelling of
  "developed".
* gnu/packages/crates-io.scm (rust-fs-utils-1)[description]: Fix spelling of
  "filesystem".
  [synopsis]: Likewise.
* gnu/packages/haxe.scm (neko)[description]: Fix spelling of "functions".
* gnu/packages/animation.scm (swftools)[description]: Fix needless
  pluralization of "information".
* gnu/packages/lisp-xyz.scm (sbcl-slot-extra-options)[description]: Fix
  spelling of "inheritance".
* gnu/packages/emacs-xyz.scm (emacs-js-comint)[description]: Fix spelling of
  "interpreter".
* gnu/packages/coq.scm (coq-mathcomp-finmap)[description]: Fix spelling of
  "library".
* gnu/services/lightdm.scm (lightdm-configuration): Fix spelling of
  "mechanism".
* gnu/packages/emacs-xyz.scm (emacs-citar-org-roam)[synopsis]: Fix spelling of
  "package".
* gnu/packages/games.scm (freerct)[description]: Fix spelling of
  "responsibilities".
* gnu/packages/statistics.scm (r-mixedpower)[description]: Fix spelling of
  "separate".
* gnu/packages/accessibility.scm (espeakup)[description]: Fix spelling of
  "speech".
* gnu/packages/bioinformatics.scm (r-skitools)[synopsis]: Fix spelling of
  "utilities".
* gnu/packages/golang.scm (go-github-com-savsgio-gotils)[synopsis]: Fix
  spelling of "utilities".
  [description]: Likewise.
* gnu/system.scm (boot-file-system-service os): Fix spelling of "utilities".

gnu/packages/animation.scm

@@ -559,7 +559,7 @@ stacking and changing parameters in SWFs.
 @item
 @command{swfstrings} Scans SWFs for text data.
 @item
-@command{swfdump} Prints out various informations about SWFs.
+@command{swfdump} Prints out various information about SWFs.
 
 @item
 @command{jpeg2swf} Takes one or more JPEG pictures and generates a SWF