update descriptions and readme.md

Signed-off-by: Gayan Perera <gayanper@gmail.com>

README.md

@@ -249,6 +249,10 @@ The following settings are supported:
 * `java.configuration.detectJdksAtStart`: Automatically detect JDKs installed on local machine at startup. If you have specified the same JDK version in `java.configuration.runtimes`, the extension will use that version first. Defaults to `true`.
 * `java.completion.collapseCompletionItems`: Enable/disable the collapse of overloaded methods in completion items. Overrides `java.completion.guessMethodArguments`. Defaults to `false`.
 * `java.diagnostic.filter`: Specifies a list of file patterns for which matching documents should not have their diagnostics reported (eg. '**/Foo.java').
+* `java.search.scope` : Specifies the scope which must be used for search operation like
+  - Find Reference
+  - Call Hierarchy
+  - Workspace Symbols
 
 Semantic Highlighting
 ===============

package.json

@@ -1517,7 +1517,7 @@
               "All classpath entries excluding test classpath entries."
             ],
             "default": "all",
-            "markdownDescription": "Specifies the scope which must be used for search operation like \n - Find Reference\n - Call hierarchy\n"
+            "markdownDescription": "Specifies the scope which must be used for search operation like \n - Find Reference\n - Call Hierarchy\n - Workspace Symbols"
           }
         }
       }