Apply suggestions from code review

Co-authored-by: Yukai Chou <[email protected]>

base/doc/ltnews41.tex

@@ -374,7 +374,7 @@ \subsection{\pkg{docstrip}:\ Error if \texttt{.ins} file is problematical}
 
 If a file to generate had the same name as a preamble declared with
 \cs{declarepreamble} the preamble definition was overwritten because
-the macro used to stored it was reused for denoting the output
+the macro used to store it was reused for denoting the output
 stream. The same problem happened with postambles declared with
 \cs{declarepostamble}. This is now detected and an error message is
 issued. To circumvent the issue in that case, simply use a different

base/docstrip.dtx

@@ -3029,7 +3029,7 @@ Z
 \def\@fileX#1#2{%
 %    \end{macrocode}
 %    If the csname used for the stream has already been defined, e.g.,
-%    as a preamble or postamble or for some other purpose, chances are
+%    as a preamble or postamble or for some other purposes, chances are
 %    that turning it into a stream number will break something. We
 %    therefore generate an error and show the current definition.
 % \changes{v2.6c}{2024-12-23}{Check that stream macro is not already
@@ -3052,7 +3052,7 @@ Z
        \string\file{\@stripstring#1} is used}%
   \fi
   \ifx\curout\currentpostamble
-       \errmessage{Declared postamble name \string#1 not allowed if
+     \errmessage{Declared postamble name \string#1 not allowed if
        \string\file{\@stripstring#1} is used}%
   \fi
 %    \end{macrocode}