Fix a typo in CONTRIBUTING.md

[sitegui]

Hello Nextcloud Android team o/

I've started studying the codebase and I've noticed a small typo in the markdown of CONTRIBUTING.md that, causing part of the file to be rendered incorrectly.

🖼️ Screenshots

🏚️ Before

https://github.com/nextcloud/android/blob/448b459165b78f376a7bfb4db9a8562daa310938/CONTRIBUTING.md#testing

🏡 After

https://github.com/sitegui/nextcloud-android/blob/978b49eb281efca974355c4d197cc868e6c977b1/CONTRIBUTING.md#testing

🏁 Checklist

• ⛑️ Tests (unit and/or integration) are included or not needed
• 🔙 Backport requests are created or not needed: /backport to stable-xx.x
• 📅 Milestone is set
• 🌸 PR title is meaningful (if it should be in the changelog: is it meaningful to users?)

🤖 AI (if applicable)

• The content of this PR was partly or fully generated using AI

[sitegui]

Just to give more context: I'm also having problems with the auto-upload feature.

I saw the call for help in #16550, so I would like to use this as an excuse to learn more about the internals of this project and maybe help with the fixes. 🤓

Do you have the auto-upload architecture documented somewhere?
I guess I'll write one for me to help understanding it. I can share it later, if you feel that it's interesting to have it on the codebase.

[AndyScherzinger]

2nd commit 3d2955b needs to be removed as is is not in scope for the PR and it is also a set of false changes we would not except, like the logging flag change as well as the app-id and cmake changes

[AndyScherzinger]

Just to give more context: I'm also having problems with the auto-upload feature.

Best to find an existing ticket or raising a new one to not mix-up different issues in a single Github issue.

The first commit was fine from my pov, but the 2nd commit makes it a blocker.

[sitegui]

Thanks @AndyScherzinger !

Sorry for the second commit, it was a mistake. I think it was auto-pushed when I ran ./script/buildDev.

[AndyScherzinger]

No worries @sitegui and thanks you very much for the fix! 🙏 Merged 🚀

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