Adjust codespell config + make it fix few typos which sneaked in since addition of codespell support (#4857)

Now that my colleague just posted a wonderful blog post https://blog.datalad.org/posts/forgejo-runner-podman-deployment/ on forgejo runner, some time I will try to add that damn codespell action to work on CI here ;)  meanwhile some typos managed to sneak in and this PR should address them (one change might be functional in a test -- not sure if would cause a fail or not)

### Release notes

- [ ] I do not want this change to show in the release notes.
- [ ] I want the title to show in the release notes with a link to this pull request.
- [ ] I want the content of the `release-notes/<pull request number>.md` to be be used for the release notes instead of the title.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/4857
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Co-authored-by: Yaroslav Halchenko <debian@onerussian.com>
Co-committed-by: Yaroslav Halchenko <debian@onerussian.com>

tools/lint-go-gopls.sh

@@ -8,7 +8,7 @@ IGNORE_PATTERNS=(
 )
 
 # lint all go files with 'gopls check' and look for lines starting with the
-# current absolute path, indicating a error was found. This is neccessary
+# current absolute path, indicating a error was found. This is necessary
 # because the tool does not set non-zero exit code when errors are found.
 # ref: https://github.com/golang/go/issues/67078
 ERROR_LINES=$("$GO" run "$GOPLS_PACKAGE" check "$@" 2>/dev/null | grep -E "^$PWD" | grep -vFf <(printf '%s\n' "${IGNORE_PATTERNS[@]}"));