Update README.md in plugin-nestedstructure (#169)

(cherry picked from commit 7365629)

Author: mokonabarb

plugin-nestedstructure/README.md

@@ -17,7 +17,7 @@ specific language governing permissions and limitations
 under the License.
 -->
 
-# ranger-api-plugin
+# plugin-nestedstructure
 
 ## License
 Licensed under the Apache License, Version 2.0.   You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0