Loosen README check for CPython forks (#473)

* Loosen README check for CPython forks

* Update blurb/blurb.py

Co-authored-by: Ezio Melotti <[email protected]>

* Update blurb/blurb.py

Co-authored-by: C.A.M. Gerlach <[email protected]>

---------

Co-authored-by: Ezio Melotti <[email protected]>
Co-authored-by: C.A.M. Gerlach <[email protected]>

Author: 3 people

blurb/blurb.py

@@ -701,7 +701,7 @@ def run(s):
     return process.stdout.decode('ascii')
 
 
-readme_re = re.compile(r"This is Python version [23]\.\d").match
+readme_re = re.compile(r"This is \w+ version \d+\.\d+").match
 
 def chdir_to_repo_root():
     global root