gnu: Fix grammar of various package descriptions.

Adjust patterns where "allows to X" to use "allows Xing" or similar forms.

* gnu/packages/build-tools.scm (potato-make): Use "Allows Xing" form.
* gnu/packages/image.scm (pngcheck): Likewise.
* gnu/packages/qt.scm (kddockwidgets): Likewise.
* gnu/packages/tex.scm (texlive-biblatex-shortfields): Use "Allow Xing" form.
(texlive-drawmatrix): Likewise.  (texlive-mathsemantics): Use "allow Y Xing"
form.  (texlive-xlop): Use "allow Xing" form.  (texlive-texlogfilter):
Likewise.

gnu/packages/build-tools.scm

@@ -1063,6 +1063,6 @@ with GNU make.")
       (description
        "Potato Make is a Scheme library that aims to simplify the task of
 maintaining, updating, and regenerating programs.  It is inspired by
-the POSIX make utility and allows to write a build script in Guile
+the POSIX make utility and allows writing a build script in Guile
 Scheme.")
       (license license:expat))))

gnu/packages/image.scm

@@ -375,7 +375,7 @@ This is a command-line program with batch capabilities (e.g. @code{pngcheck
 *.png}.)
 
 Also includes @code{pngsplit} which can split a PNG, MNG or JNG file into individual,
-numbered chunks, and @code{png-fix-IDAT-windowsize} that allow to reset first IDAT's
+numbered chunks, and @code{png-fix-IDAT-windowsize} that allows resetting first IDAT's
 zlib window-size bytes and fix up CRC to match.")
     ;; "pngsplit" and "png-fix-IDAT-windowsize" are licensed under the terms of
     ;; GNU GPL2+.  See "gpl/COPYING" in the repository."

gnu/packages/qt.scm

@@ -347,7 +347,7 @@ Qt.  Some of its features include:
 @item Double-click on title bar to maximize
 @item Double-click on separator to distribute equally
 @item Show close button on tabs
-@item Allow to make a dock widget non-closable and/or non-dockable
+@item Allows making a dock widget non-closable and/or non-dockable
 @item Optional minimize and maximize button on the title bar
 @item FloatingWindows can be utility windows or full native ones.
 @end itemize")

gnu/packages/tex.scm

@@ -7742,7 +7742,7 @@ preparing papers for submission to the journal @emph{Science}.")
      "The BibLaTeX package provides @code{shortseries} and @code{shortjournal}
 field, but the default styles don't use them.  It also provides a mechanism to
 print the equivalence between short forms of fields and long
-fields (@code{\\printbiblist}), but this mechanism does not allow to mix
+fields (@code{\\printbiblist}), but this mechanism does not allow mixing
 between different type of short fields, for example, between short forms of
 journal title and short forms of series titles.
 
@@ -14316,7 +14316,7 @@ a ``dramatis personae'' list.")
     (synopsis "Draw visual representations of matrices in LaTeX")
     (description
      "The package provides macros to visually represent matrices.  Various
-options allow to change the visualizations, e.g., drawing rectangular,
+options allow changing the visualizations, e.g., drawing rectangular,
 triangular, or banded matrices.")
     (license license:expat)))
 
@@ -26238,7 +26238,7 @@ semicolons in mathematical expressions.")
 typeset mathematics in LaTeX.  The syntactic layer eases typesetting of
 formulae in general, while the semantic layer provides commands like
 @code{\\inner@{x@}@{y@}} to unify typesetting of inner products.  These not
-only unify typesetting of math formulae but also allow to easily adapt
+only unify typesetting of math formulae but also allow easily adapting
 notation if a user prefers to.  The semantic layer is split into topics.")
     (license license:expat)))
 
@@ -46868,7 +46868,7 @@ automatically created storing inputs and outputs.")
     (description
      "Xlop (eXtra Large OPeration) will typeset arithmetic problems either
 in-line or as in school (using French school conventions).  Many other
-features allow to deal with numbers (tests, display, some high level
+features allow dealing with numbers (tests, display, some high level
 operations, etc.)")
     (license license:lppl1.3+)))
 
@@ -54568,7 +54568,7 @@ the log file.")
      "@command{texlogfilter} is a Perl script designed to filter LaTeX engines
 output or log file (LaTeX, pdfLaTeX, LuaLaTeX or XeLaTeX).  It reduces the
 LaTeX output or log to keep only warnings and errors.  The result is
-colorised.  Options allow to mask specific warnings, such as box or
+colorised.  Options allow masking specific warnings, such as box or
 references/citations warnings.  It's also possible to add custom filter
 patterns.")
     (license license:lppl1.3+)))