docs: adjust sidebar menu

docs-en/07-tools/01-cli.md

+# TDengine CLI
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docs-en/07-tools/02-taosdump.md

+# taosDump
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docs-en/07-tools/03-taosbenchmark.md

+# taosBenchMark
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docs-en/07-tools/04-taosx.md

+# taosX
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docs-en/07-tools/index.md

+#  Tools
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docs-en/08-operation/index.md

-#  Administration
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docs-en/09-reference/index.md → docs-en/09-connector/index.md

-# Reference 
+# Connector 
 
-The reference guide is a detailed introduction to TDengine including various TDengine connectors in different languages, and the tools that come with TDengine.
 
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