undocumented param

Author: Wyliemaster

docs/endpoints/accounts/loginGJAccount.md

@@ -16,7 +16,7 @@ Logs into an account
 
 ### Optional Parameters
 
-**sID** - Unsure, seems to be another 
+**sID** - The players Steam ID
 
 ## Response
 
@@ -47,4 +47,4 @@ print(req.text)
 173831,3935672
 ```
 
-<!-- tabs:end -->
+<!-- tabs:end -->