Fix sidebar position for RustSDK

[mhmohona]

Explanation

Added sidebar position for RustSDK

Related issue

What type of PR is this

/kind bug

Proposed Changes

[alabulei1]

Hello, I am a code review bot on flows.network. Here are my reviews of code commits in this PR.

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Commit d7abfee2181b4137bf7fcc57431cb1fe644b197a

Key changes:

• Added sidebar_position metadata to both English and Chinese versions of the document.
• Set the sidebar_position value to 4.

Potential problems:

• No significant problems were identified in this patch. It appears to be a simple fix to set the sidebar position for the RustSDK documentation.

Other findings:

• The author's email address has been provided in the Signed-off-by field.

[alabulei1]

Hi @mhmohona

The DCO test fails. Can you please fix it?