[release-1.23] Fix the blog link typo in 1.24 announcement

[istio-testing]

Manual cherrypick required.

#15874 failed to apply on top of branch "release-1.23":

Applying: Fix the blog link typo in 1.24 announcement
Using index info to reconstruct a base tree...
A	content/en/news/releases/1.24.x/announcing-1.24/_index.md
Falling back to patching base and 3-way merge...
CONFLICT (modify/delete): content/en/news/releases/1.24.x/announcing-1.24/_index.md deleted in HEAD and modified in Fix the blog link typo in 1.24 announcement. Version Fix the blog link typo in 1.24 announcement of content/en/news/releases/1.24.x/announcing-1.24/_index.md left in tree.
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config advice.mergeConflict false"
Patch failed at 0001 Fix the blog link typo in 1.24 announcement