Remove trailing whitespace from blog to fix precommit

[damccorm]

This fixes the breakages introduced by #24951 by removing trailing whitespace. It is an alternative to #25048 which removes the rule.

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[damccorm]

Run Whitespace PreCommit

[Abacn]

ah I see, the point is (two space) and (two new line) have the same effect.
would you like taking the chance to fix old release notes where new lines in List of Contributors not rendering (e.g. either add another new line as 2.44.0 release note, or add a comma separator or so)

[lukecwik]

I'm happy with this as well and I'm going to merge this to get a green signal. We can always revert and remove the whitespace check in the future if people like the alternative more.

[lukecwik]

The website and whitespace checks passed, just delayed update here.

[kennknowles]

This alters <br /> to <p /> does it not?

[kennknowles]

Just to answer my own question, yes: this PR is not equivalent to what it replaced, but adds a lot of whitespace to the blog post. It reads well anyhow, but wanted to be clear that this is a formatting change, not an alternative formulation of the same formatting.