Fix: change c/c++ lexer name to something that doesn't get escaped.

Author: bjones1

client/src/CodeMirror-integration.mts

@@ -919,7 +919,7 @@ export const CodeMirror_load = async (
             case "sh":
                 parser = cpp();
                 break;
-            case "c_cpp":
+            case "cpp":
                 parser = cpp();
                 break;
             case "csharp":

server/src/lexer/supported_languages.rs

@@ -147,7 +147,7 @@ pub fn get_language_lexer_vec() -> Vec<LanguageLexer> {
         ),
         // ### C/C++
         make_language_lexer(
-            "c_cpp",
+            "cpp",
             // Unusual extensions:
             //
             // * The `.ino` extension is for Arduino source files.