GUAC-587: Fix missing wording in log messages. (Please what?)

guacamole/src/main/java/org/glyptodon/guacamole/net/basic/extension/AuthenticationProviderFacade.java

@@ -123,7 +123,7 @@ public class AuthenticationProviderFacade implements AuthenticationProvider {
 
         // Ignore auth attempts if no auth provider could be loaded
         if (authProvider == null) {
-            logger.warn("Authentication attempt denied because the authentication system could not be loaded. Please for errors earlier in the logs.");
+            logger.warn("Authentication attempt denied because the authentication system could not be loaded. Please check for errors earlier in the logs.");
             throw new GuacamoleInvalidCredentialsException("Permission denied.", CredentialsInfo.USERNAME_PASSWORD);
         }
 
@@ -138,7 +138,7 @@ public class AuthenticationProviderFacade implements AuthenticationProvider {
 
         // Ignore auth attempts if no auth provider could be loaded
         if (authProvider == null) {
-            logger.warn("Reauthentication attempt denied because the authentication system could not be loaded. Please for errors earlier in the logs.");
+            logger.warn("Reauthentication attempt denied because the authentication system could not be loaded. Please check for errors earlier in the logs.");
             throw new GuacamoleInvalidCredentialsException("Permission denied.", CredentialsInfo.USERNAME_PASSWORD);
         }