Add missing period

doc/development/secure_coding_guidelines.md

@@ -127,9 +127,9 @@ class Email < ApplicationRecord
   DOMAIN_MATCH = Regexp.new('([a-zA-Z0-9]+)+\.com')
 
   validates :domain_matches
-  
+
   private
-  
+
   def domain_matches
     errors.add(:email, 'does not match') if email =~ DOMAIN_MATCH
   end
@@ -184,7 +184,7 @@ have been reported to GitLab include:
 - Reading internal services, including cloud service metadata.
   - The latter can be a serious problem, because an attacker can obtain keys that allow control of the victim's cloud infrastructure. (This is also a good reason
   to give only necessary privileges to the token.). [More details](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/51490).
-- When combined with CRLF vulnerability, remote code execution. [More details](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/41293)
+- When combined with CRLF vulnerability, remote code execution. [More details](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/41293).
 
 ### When to Consider