PEP8

Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>

Doc/howto/regex.rst

@@ -488,7 +488,7 @@ In actual programs, the most common style is to store the
 Python 3.8 added assignment expressions that shorten the above pattern
 by a line::
 
- p = re.compile( ... )
+ p = re.compile(...)
  if (m := p.match( 'string goes here' )):
  print('Match found: ', m.group())
  else: