style: update & resolve doc block warnings (#1774)

* style: resolve throw symbols (except InvalidArgumentException)
* style: resolve unknown symbol & reduce indention for PluginEntry
* fix: define IllegalArgumentException not InvalidArgumentException

test/androidx/app/src/androidTest/java/org/apache/cordova/unittests/StandardActivityTest.java

@@ -66,7 +66,7 @@ public class StandardActivityTest {
     @Test
     public void webViewCheck() {
         StandardActivity activity = (StandardActivity) mActivityRule.getActivity();
-        //Fish the webview out of the mostly locked down Activity using the Android SDK
+        // Fish the WebView out of the mostly locked down Activity using the Android SDK
         View view = activity.getWindow().getCurrentFocus();
         assertEquals(SystemWebView.class, view.getClass());
     }

test/androidx/app/src/main/java/org/apache/cordova/unittests/EmbeddedWebViewActivity.java

@@ -44,7 +44,7 @@ public class EmbeddedWebViewActivity extends AppCompatActivity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
-        //Set up the webview
+        // Set up the WebView
         ConfigXmlParser parser = new ConfigXmlParser();
         parser.parse(this);