Update contributors.yaml

PR: #59
Signed-off-by: char ma <test@mail.com>
Reviewed-by: Charalampos Mainas <cmainas@nubificus.co.uk>
Approved-by: Charalampos Mainas <cmainas@nubificus.co.uk>

Author: charma7

.github/contributors.yaml

@@ -83,3 +83,6 @@ users:
   jim-junior:
     name: Beingana Jim Junior
     email: jimjunior854@gmail.com
+  charma7:
+    name: A test user
+    email: test@mail.com