Updates the eclipse plugin link

Upgrade from version 1.6 to version 1.11 (according #465)

Fixes #639

COPYBARA_INTEGRATE_REVIEW=#639 from av1m:patch-1 2c5c2b0
PiperOrigin-RevId: 388249150

README.md

@@ -70,8 +70,8 @@ and import it into File→Settings→Editor→Code Style.
 
 ### Eclipse
 
-Version 1.6 of the
-[google-java-format Eclipse plugin](https://github.com/google/google-java-format/releases/download/google-java-format-1.6/google-java-format-eclipse-plugin_1.6.0.jar)
+Version 1.11 of the
+[google-java-format Eclipse plugin](https://github.com/google/google-java-format/releases/download/v1.11.0/google-java-format-eclipse-plugin-1.11.0.jar)
 can be downloaded from the releases page. Drop it into the Eclipse
 [drop-ins folder](http://help.eclipse.org/neon/index.jsp?topic=%2Forg.eclipse.platform.doc.isv%2Freference%2Fmisc%2Fp2_dropins_format.html)
 to activate the plugin.