treewide: fix typos in comments

Made with

```shell
git restore .
fd '\.nix$' pkgs/ --type f -j1 -x bash -xc "$(cat <<"EOF"
    typos --no-check-filenames --write-changes "$1"
    git diff --exit-code "$1" && exit
    #( git diff "$1" | grep -qE "^\+ +[^# ]") && git restore "$1"
    count1="$( bat --language nix --diff --style changes "$1" --theme "Monokai Extended" --color always | aha --no-header | grep -E '^<span style="color:olive;">~</span> ' | wc -l )"
    count2="$( bat --language nix --diff --style changes "$1" --theme "Monokai Extended" --color always | aha --no-header | grep -E '^<span style="color:olive;">~</span> (<span style="color:#f8f8f2;"> *</span>)?<span style="color:#75715e;">.*</span>$' | wc -l )"
    [[ $count1 -ne $count2 ]] && git restore "$1"
EOF
)" -- {}
```

and filtered with `GIT_DIFF_OPTS='--unified=15' git -c interactive.singleKey=true add --patch`

I initially tried using the tree-sitter cli, python bindings and even ast-grep through various means, but this is what I ended up with.

1 files changed, 1 insertions, 1 deletions

diff --git a/pkgs/development/python-modules/matplotlib/default.nix b/pkgs/development/python-modules/matplotlib/default.nix
index 06078a2b9b4f..a8e2768f1fbd 100644
--- a/pkgs/development/python-modules/matplotlib/default.nix
+++ b/pkgs/development/python-modules/matplotlib/default.nix
@@ -21,7 +21,7 @@
   ffmpeg-headless,
   freetype,
   # By default, almost all tests fail due to the fact we use our version of
-  # freetype. We still define use this argument to define the overriden
+  # freetype. We still use this argument to define the overridden
   # derivation `matplotlib.passthru.tests.withoutOutdatedFreetype` - which
   # builds matplotlib with the freetype version they default to, with which all
   # tests should pass.