Fix simple typo: containg -> containing (#762)

Co-authored-by: Asif Saif Uddin <[email protected]>
Co-authored-by: Mariano ramirez <[email protected]>

Author: 3 people

tests/utils.py

@@ -3,7 +3,8 @@
 
 def get_basic_auth_header(user, password):
     """
-    Return a dict containg the correct headers to set to make HTTP Basic Auth request
+    Return a dict containing the correct headers to set to make HTTP Basic
+    Auth request
     """
     user_pass = "{0}:{1}".format(user, password)
     auth_string = base64.b64encode(user_pass.encode("utf-8"))