remove example from toc

(cherry picked from commit 8895641)

Author: shuangela

source/usage-examples.txt

@@ -22,8 +22,8 @@ Usage Examples
    Find Operations </usage-examples/find-operations>
    Write Operations </usage-examples/write-operations>
    Bulk Operations </usage-examples/bulkWrite>
-   Monitor Data Changes Example </usage-examples/changestream>
-   Count Documents Method Example </usage-examples/count>
+   Monitor Data Changes </usage-examples/changestream>
+   Count Documents Method </usage-examples/count>
    Distinct Field Values </usage-examples/distinct>
    Run a Command </usage-examples/command>
    Use Struct Tags </usage-examples/struct-tagging>

source/usage-examples/changestream.txt

@@ -2,7 +2,7 @@
 .. _golang-usageex-monitor-changes:
 
 ============================
-Monitor Data Changes Example
+Open a Change Stream Example
 ============================
 
 .. meta::