[docs] Remove extra character from git URL in Getting Started guide.

llvm-svn: 352005
diff --git a/llvm/docs/GettingStarted.rst b/llvm/docs/GettingStarted.rst
index d2a5b13..126b842 100644
--- a/llvm/docs/GettingStarted.rst
+++ b/llvm/docs/GettingStarted.rst
@@ -416,7 +416,7 @@
 
 .. code-block:: console
 
-  % git clone https://github.com/llvm/llvm-project.git`
+  % git clone https://github.com/llvm/llvm-project.git
 
 or on Windows,