stdenv: substituteInPlace: accept multiple filenames

I don't know if getopt is available everywhere, so I did not use it.

in any case, it can be changed to use getopt in the future if
needed.

1 files changed, 2 insertions, 2 deletions

diff --git a/doc/stdenv/stdenv.chapter.md b/doc/stdenv/stdenv.chapter.md
index b57698cb90b34..83464a759a586 100644
--- a/doc/stdenv/stdenv.chapter.md
+++ b/doc/stdenv/stdenv.chapter.md
@@ -913,9 +913,9 @@ substitute ./foo.in ./foo.out \
     --subst-var someVar
 ```
 
-### `substituteInPlace` \<file\> \<subs\> {#fun-substituteInPlace}
+### `substituteInPlace` \<multiple files\> \<subs\> {#fun-substituteInPlace}
 
-Like `substitute`, but performs the substitutions in place on the file \<file\>.
+Like `substitute`, but performs the substitutions in place on the files passed.
 
 ### `substituteAll` \<infile\> \<outfile\> {#fun-substituteAll}