[NFC] Trim trailing whitespace in *.rst
diff --git a/clang/docs/OpenCLSupport.rst b/clang/docs/OpenCLSupport.rst
index 7bfb471..7ac5707 100644
--- a/clang/docs/OpenCLSupport.rst
+++ b/clang/docs/OpenCLSupport.rst
@@ -148,7 +148,7 @@
 **Example of Use**:
 
     .. code-block:: console
- 
+
       $ clang -Xclang -fdeclare-opencl-builtins test.cl
 
 .. _opencl_fake_address_space_map: