[libc++] Correct macro name in documenation
The macro is named `_LIBCPP_TEMPLATE_VIS`, not `_LIBCPP_TEMPLATE_ONLY`.
No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@291330 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/DesignDocs/VisibilityMacros.rst b/docs/DesignDocs/VisibilityMacros.rst
index 37539ec..7c6f39c 100644
--- a/docs/DesignDocs/VisibilityMacros.rst
+++ b/docs/DesignDocs/VisibilityMacros.rst
@@ -49,7 +49,7 @@
attribute. With GCC the `visibility(...)` attribute is used and member
functions are affected.
-**_LIBCPP_TEMPLATE_ONLY**
+**_LIBCPP_TEMPLATE_VIS**
The same as `_LIBCPP_TYPE_VIS` except that it may be applied to class
templates.