Fixed markdown syntax in Python serving README.md

[dhruvy1]

This PR fixes markdown syntax in the serving/hello-world/helloworld-python/README.md file. Making it easier to read for new starters.

"Fixes #issue-number" or "Add description of the problem this PR solves"

Proposed Changes

• Update markdown syntax in serving/hello-world/helloworld-python/README.md file

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[knative-prow[bot]]

Welcome @dhruvy1! It looks like this is your first PR to knative/docs 🎉

[knative-prow[bot]]

Hi @dhruvy1. Thanks for your PR.

I'm waiting for a knative member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[abrennan89]

/ok-to-test /hold

[abrennan89]

@dhruvy1 thanks for the PR! I've added a few comments, mostly about formatting or suggestions for readability of content.

[abrennan89]

/lgtm /approve

Would've been nice to have had review comments implemented, but merging anyway since I don't want this issue to get stale. @dhruvy1 for future PRs, please follow the style guide to ensure docs are consistent. Thanks.

[knative-prow[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: abrennan89, dhruvy1

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