docs: update submodule initialization command in CONTRIBUTING.md

[jayant-dhingra-cb]

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[gemini-code-assist]

Summary of Changes

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This pull request refines the contribution guidelines by correcting a command within the CONTRIBUTING.md file. The change ensures that new contributors can accurately initialize Git submodules when setting up their development environment, streamlining the onboarding process.

Highlights

• Documentation Update: The CONTRIBUTING.md file has been updated to correct the git submodule update command, changing --remote to --init for proper submodule initialization.

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[gemini-code-assist]

Code Review

This pull request updates the submodule initialization command in CONTRIBUTING.md. The change from using the --remote flag to the --init flag is a good correction that improves the reproducibility of the build process. My feedback points out that the git submodule update command is now redundant when used after git clone --recurse-submodules, and I've suggested removing it to streamline the setup instructions.

[gemini-code-assist]

This command is redundant because git clone --recurse-submodules (on line 71) already initializes and updates the submodules.

While changing --remote to --init is a good correction, the entire line can be removed to make the setup instructions more concise.