Fix hover for Self keyword

crates/hir_def/src/macro_expansion_tests.rs

@@ -302,6 +302,7 @@ fn pretty_print_macro_expansion(expn: SyntaxNode, map: Option<&TokenMap>) -> Str
             (T![fn], T!['(']) => "",
             (T![']'], _) if curr_kind.is_keyword() => " ",
             (T![']'], T![#]) => "\n",
+            (T![Self], T![::]) => "",
             _ if prev_kind.is_keyword() => " ",
             _ => "",
         };

crates/ide/src/hover/render.rs

@@ -545,7 +545,6 @@ fn keyword_hints(
                 },
             }
         }
-
         T![fn] => {
             let module = match ast::FnPtrType::cast(parent) {
                 // treat fn keyword inside function pointer type as primitive
@@ -554,7 +553,7 @@ fn keyword_hints(
             };
             KeywordHint::new(token.text().to_string(), module)
         }
-
+        T![Self] => KeywordHint::new(token.text().to_string(), "self_upper_keyword".into()),
         _ => KeywordHint::new(token.text().to_string(), format!("{}_keyword", token.text())),
     }
 }