Updated the function-type-return-type ending match

Author: zhengbli

TypeScript.YAML-tmLanguage

@@ -302,7 +302,7 @@ repository:
     begin: '=>'
     beginCaptures:
       '0': { name: keyword.operator.ts }
-    end: (?=[,\)\{=;]|//)
+    end: (?=[,\)\{=;]|//|$)
     patterns:
     - include: '#type'
 

TypeScript.tmLanguage

@@ -592,7 +592,7 @@
 				</dict>
 			</dict>
 			<key>end</key>
-			<string>(?=[,\)\{=;]|//)</string>
+			<string>(?=[,\)\{=;]|//|$)</string>
 			<key>name</key>
 			<string>meta.function.type.return.ts</string>
 			<key>patterns</key>