[skip ci] Fix linguist-generated for zend_vm_opcodes files

{h,c} is not actually a supported pattern

Author: iluuu1994

Diff for: .gitattributes

@@ -22,7 +22,7 @@
 # Collapse generated files within a pull request.
 **/*_arginfo.h linguist-generated
 /Zend/zend_vm_execute.h linguist-generated
-/Zend/zend_vm_opcodes.{h,c} linguist-generated
+/Zend/zend_vm_opcodes.[ch] linguist-generated
 
 # The OSS fuzz files are bunary
 /ext/date/tests/ossfuzz*.txt binary