Fix broken link on Clang documentation page

[tupaschoal]

Summary

While browsing the latest clang manual, I came across this warning and clicked, but it leads to a broken page, apparently because it's missing the trailing /. Seems to be the only place where it's missing in the whole of LLVM monorepo.

[tupaschoal]

Btw seems to have been broken recently by https://github.com/llvm/llvm-project/commit/f5aa8d191a5b5ea118281bfa410bdb2ee961c704, so tagging @royjacobson too

[brenoguim]

LGTM

[royjacobson]

Thanks! Do you need me to land this for you? If so, could you please provide name + email to sign the commit with?

[tupaschoal]

In D145047#4164976, @royjacobson wrote:

Thanks! Do you need me to land this for you? If so, could you please provide name + email to sign the commit with?

Yes, please!
Tulio Leao <[e-mail]>

clang/docs/ReleaseNotes.rst

   .. warning::
      These are in-progress notes for the upcoming Clang |version| release.
      Release notes for previous releases can be found on
-     `the Releases Page <https://llvm.org/releases>`_.
+     `the Releases Page <https://llvm.org/releases/>`_.
 
 Introduction
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