File naming convention change

core_codegen_c_language.cpp

@@ -832,7 +832,7 @@ typedef struct String{
     compiler_error(0, "Entry point is not defined! Try main or WinMain");
   }
 
-  // Generate language.kl
+  // Generate language.core
   for(S32 i = 0; i < pctx->base_language_ordered_decl_len; i++){
     Ast_Decl *it = get(&pctx->ordered_decls, i);
     genln("");