fix: [tools] Fixed regex for pehash attribute type validation

- Was still containing a delimiter as in PHP

Author: chrisr3d

pymisp/tools/attributevalidationtool.py

@@ -321,7 +321,7 @@ def validate(cls, attribute_type, value):
                     return True
                 return 'Unknown HTTP method.'
             case 'filename|pehash':
-                if re.fullmatch(r'^.+\|[0-9a-f]{40}$#', value):
+                if re.fullmatch(r'^.+\|[0-9a-f]{40}$', value):
                     return True
                 return (
                     "The input doesn't match the expected filename|sha1 format "