Improve language filter placement, fixes #145711

[rzhao271]

This PR fixes #145711

1. Search for a query such that a language config setting such as markdown shows up (the description of that setting will read "Configure settings to be overridden for the markdown language.") Two search queries that help with this step are editor.wordwrap and markdown (both case-sensitive).
2. For the markdown query, when pressing on the "Edit settings for markdown" link, the search query should become @lang:markdown.
3. For the editor.wordwrap query, when pressing on the "Edit settings for markdown" link, the search query should become editor.wordwrap @lang:markdown.