Fix javadoc sentence warning

Author: akarnokd

src/test/java/io/reactivex/plugins/RxJavaPluginsTest.java

@@ -1170,7 +1170,7 @@ public void uncaughtException(Thread t, Throwable e) {
     }
 
     /**
-     * Ensure set*() accepts a consumers/functions with wider bounds
+     * Ensure set*() accepts a consumers/functions with wider bounds.
      * @throws Exception on error
      */
     @Test

src/test/java/io/reactivex/schedulers/NewThreadSchedulerTest.java

@@ -117,7 +117,7 @@ public void run() {
     }
 
     /**
-     * Regression test to ensure there is no NPE when the worker has been disposed
+     * Regression test to ensure there is no NPE when the worker has been disposed.
      * @throws Exception on error
      */
     @Test