[Branch-Rename] Fix some links
According to the [[ https://foundation.llvm.org/docs/branch-rename/ | status of branch rename ]], the master branch of the LLVM repository is removed on 28 Jan 2021.
Reviewed By: mehdi_amini
Differential Revision: https://reviews.llvm.org/D95766
GitOrigin-RevId: 94fac81fccfef9917e94bed398781744fb82e159
diff --git a/docs/index.rst b/docs/index.rst
index d134bf2..f7ff29d 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -101,4 +101,4 @@
* `LLVM Bugzilla <https://bugs.llvm.org/>`_
* `cfe-commits Mailing List`_
* `cfe-dev Mailing List`_
-* `Browse libunwind Sources <https://github.com/llvm/llvm-project/blob/master/libunwind/>`_
+* `Browse libunwind Sources <https://github.com/llvm/llvm-project/blob/main/libunwind/>`_
