[docs] Fix a broken URL in 'HowToAddABuilder'

llvm-svn: 282718
GitOrigin-RevId: 32add8121deea6ba468493541dd6ed3bcd44df12
diff --git a/docs/HowToAddABuilder.rst b/docs/HowToAddABuilder.rst
index 8fc1d0f..9e06a32 100644
--- a/docs/HowToAddABuilder.rst
+++ b/docs/HowToAddABuilder.rst
@@ -43,7 +43,7 @@
 #. Create a buildslave in context of that buildslave account.  Point it to
    the **lab.llvm.org** port **9990** (see `Buildbot documentation,
    Creating a slave
-   <http://buildbot.net/buildbot/docs/current/full.html#creating-a-slave>`_
+   <http://docs.buildbot.net/current/tutorial/firstrun.html#creating-a-slave>`_
    for more details) by running the following command:
 
     .. code-block:: bash