Inline all format arguments where possible

This makes code more readale and concise,
moving all format arguments like `format!("{}", foo)`
into the more compact `format!("{foo}")` form.

The change was automatically created with, so there are far less change
of an accidental typo.

```
cargo clippy --fix -- -A clippy::all -W clippy::uninlined_format_args
```

crates/ide/src/doc_links.rs

@@ -453,7 +453,7 @@ fn get_doc_base_url(db: &RootDatabase, def: Definition) -> Option<Url> {
             })?
         }
     };
-    Url::parse(&base).ok()?.join(&format!("{}/", display_name)).ok()
+    Url::parse(&base).ok()?.join(&format!("{display_name}/")).ok()
 }
 
 /// Get the filename and extension generated for a symbol by rustdoc.
@@ -488,7 +488,7 @@ fn filename_and_frag_for_def(
                 Some(kw) => {
                     format!("keyword.{}.html", kw.trim_matches('"'))
                 }
-                None => format!("{}/index.html", name),
+                None => format!("{name}/index.html"),
             },
             None => String::from("index.html"),
         },