Change C++ auto closing comment start from /* to /**

Fixes #77008

extensions/cpp/language-configuration.json

@@ -14,7 +14,7 @@
 		{ "open": "(", "close": ")" },
 		{ "open": "'", "close": "'", "notIn": ["string", "comment"] },
 		{ "open": "\"", "close": "\"", "notIn": ["string"] },
-		{ "open": "/*", "close": " */", "notIn": ["string", "comment"] }
+		{ "open": "/**", "close": " */", "notIn": ["string", "comment"] }
 	],
 	"surroundingPairs": [
 		["{", "}"],