Revert "docs: Hide sources"

This reverts commit 6c3699f.

Author: pawamoy

mkdocs.yml

@@ -122,7 +122,6 @@ plugins:
           show_root_heading: true
           show_root_full_path: false
           show_signature_annotations: true
-          show_source: false
           show_symbol_type_heading: true
           show_symbol_type_toc: true
           signature_crossrefs: true