Stop ignoring docs/

The prior PR had added docs/ to .gitignore for developer convenience, but
that causes the pkgdown workflow to fail when it tries to commit
documentation. We should address this as part of issue #412, so this
is a temporary patch to fixup the CI pipeline

.gitignore

@@ -11,7 +11,6 @@ inst/doc
 # pre-commit isn't part of the team workflow, so don't commit the config
 **/.pre-commit-config.yaml
 
-docs
 Meta
 
 # data generated by test suite and other dev operations