Additional syntax highlighting screenshot in manual

Author: MozarellaMan

crates/ide/src/syntax_highlighting.rs

@@ -50,6 +50,7 @@ pub struct HlRange {
 // We also give special modifier for `mut` and `&mut` local variables.
 //
 // image::https://user-images.githubusercontent.com/48062697/113164457-06cfb980-9239-11eb-819b-0f93e646acf8.png[]
+// image::https://user-images.githubusercontent.com/48062697/113187625-f7f50100-9250-11eb-825e-91c58f236071.png[]
 pub(crate) fn highlight(
     db: &RootDatabase,
     file_id: FileId,