dynapi: It's a Python script now, not a perl script.

Fixes #11032.

src/dynapi/SDL_dynapi_overrides.h

@@ -20,7 +20,7 @@
 */
 
 
-// DO NOT EDIT THIS FILE BY HAND. It is autogenerated by gendynapi.pl.
+// DO NOT EDIT THIS FILE BY HAND. It is autogenerated by gendynapi.py.
 
 #if !SDL_DYNAMIC_API
 #error You should not be here.

src/dynapi/SDL_dynapi_procs.h

@@ -21,7 +21,7 @@
 
 
 /*
-   DO NOT EDIT THIS FILE BY HAND. It is autogenerated by gendynapi.pl.
+   DO NOT EDIT THIS FILE BY HAND. It is autogenerated by gendynapi.py.
    NEVER REARRANGE THIS FILE, THE ORDER IS ABI LAW.
    Changing this file means bumping SDL_DYNAPI_VERSION. You can safely add
    new items to the end of the file, though.