Docs: Fix rendering of SyntaxError#path

error.c

@@ -3028,12 +3028,16 @@ Init_Exception(void)
     rb_eSyntaxError = rb_define_class("SyntaxError", rb_eScriptError);
     rb_define_method(rb_eSyntaxError, "initialize", syntax_error_initialize, -1);
 
+    /* RDoc will use literal name value while parsing rb_attr,
+    *  and will render `idPath` as an attribute name without this trick */
+    ID path = idPath;
+
     /* the path failed to parse */
-    rb_attr(rb_eSyntaxError, idPath, TRUE, FALSE, FALSE);
+    rb_attr(rb_eSyntaxError, path, TRUE, FALSE, FALSE);
 
     rb_eLoadError   = rb_define_class("LoadError", rb_eScriptError);
     /* the path failed to load */
-    rb_attr(rb_eLoadError, idPath, TRUE, FALSE, FALSE);
+    rb_attr(rb_eLoadError, path, TRUE, FALSE, FALSE);
 
     rb_eNotImpError = rb_define_class("NotImplementedError", rb_eScriptError);