Minor improvement on error message

arquillian/core/src/main/java/org/jboss/forge/arquillian/ForgeTestMethodExecutor.java

@@ -100,7 +100,7 @@ public TestResult invoke(final TestMethodExecutor testMethodExecutor)
          if (instance == null)
             throw new IllegalStateException(
                      "Test class could not be found in any deployment. "
-                              + "You must have one @Deployment(testable=true\"); deployment that contains a "
+                              + "You must have one @Deployment(testable=true) deployment that contains a "
                               + "non 'ClassLoading Only' Addon(e.g. An addon that is capable of providing remote services.).");
 
          TestResult result = null;