fix typo in gen.yaml (#328)

Author: badGarnet

gen.yaml

@@ -40,7 +40,7 @@ python:
       cryptography: '>=3.1'
       httpx: '>=0.27.0'
       pypdf: '>= 6.2.0'
-      pypdfium: '>= 5.0.0'
+      pypdfium2: '>= 5.0.0'
       requests-toolbelt: '>=1.0.0'
   allowedRedefinedBuiltins:
     - id