Update modules/authentication/snip-enabling-user-authentication-with-github-common-first-steps.adoc

Author: themr0c

modules/authentication/snip-enabling-user-authentication-with-github-common-first-steps.adoc

@@ -85,7 +85,7 @@ Enter a stable identifier for this provider, such as `githuborg`.
 [WARNING]
 ====
 Entities from this provider are associated with this identifier. 
-Therefore, do not to change it over time since that might lead to orphaned entities or conflicts.
+Therefore, do not to change the identifier over time since that might lead to orphaned entities or conflicts.
 ====
 
 `githubUrl`::