diff --git a/docs/scenes/legacy-migration.md b/docs/scenes/legacy-migration.md
index 5389d5466e..43f20650b7 100644
--- a/docs/scenes/legacy-migration.md
+++ b/docs/scenes/legacy-migration.md
@@ -20,6 +20,8 @@ Building upon the experience accumulated in our "[System Refactoring and Migrati
 
 Support language: Java.
 
+![AutoDev Living Documentation](https://unitmesh.cc/auto-dev/gen-test-data.png)
+
 Simply right-click on the Java Controller code, select "Generate Test Data (APIs)," and API test data will be generated.
 
 ### 2. Custom Prompt Integration
diff --git a/exts/devin-lang/src/grammar/DevInLexer.flex b/exts/devin-lang/src/grammar/DevInLexer.flex
index 695b7ba40b..425c9bb8b3 100644
--- a/exts/devin-lang/src/grammar/DevInLexer.flex
+++ b/exts/devin-lang/src/grammar/DevInLexer.flex
@@ -103,6 +103,6 @@ NEWLINE= \n | \r | \r\n
 
 <LANG_ID> {
    "```"             { return CODE_BLOCK_START; }
-   {IDENTIFIER}      { yybegin(YYINITIAL); return LANGUAGE_ID;  }
+   {LANGUAGE_ID}     { return LANGUAGE_ID;  }
    [^]               { yypushback(1); yybegin(CODE_BLOCK); }
 }