Remove reference to make pystubs

Author: chadrik

src/bindings/python/stubs/PyOpenColorIO/__init__.pyi

@@ -1,5 +1,6 @@
 #
-# This file is auto-generated. DO NOT MODIFY!  Run `make pystubs` to regenerate
+# This file is auto-generated. DO NOT MODIFY!
+# See docs/quick_start/installation.rst for more info
 #
 
 import numpy

src/bindings/python/stubs/generate_stubs.py

@@ -146,8 +146,8 @@ def main() -> None:
 
     new_text = dest_path.read_text()
     new_text = (
-        "#\n# This file is auto-generated. DO NOT MODIFY!  "
-        "Run `make pystubs` to regenerate\n#\n\n"
+        "#\n# This file is auto-generated. DO NOT MODIFY!\n"
+        "# See docs/quick_start/installation.rst for more info\n#\n\n"
     ) + new_text
     dest_path.write_text(new_text)