remove example from toc

(cherry picked from commit dfbc156)

Author: shuangela

source/usage-examples.txt

@@ -25,7 +25,7 @@ Usage Examples
    Monitor Data Changes </usage-examples/changestream>
    Count Documents Method Example </usage-examples/count>
    Distinct Field Values </usage-examples/distinct>
-   Run a Command Example </usage-examples/command>
+   Run a Command </usage-examples/command>
    Use Struct Tags </usage-examples/struct-tagging>
 
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