7e1a184446
Some code blocks that are returned in tooltips (returned by language
servers, for example) use the language file extension as the language in
the the triple-backtick code blocks.
Example:
```rs
fn rust_code() {}
```
```cpp
fn rust_code() {}
```
Before this change we only looked up the language with the
`rs`/`cpp`/... being interpreted as the language name. Now we also treat
it as a possible file extension.
Release Notes:
- Fixed Markdown code blocks in tooltips not having correct language
highlighting.
Before:
After:
Co-authored-by: Bennet <bennetbo@gmx.de>