[man page] Fix two sphinx build errors.
These options were referenced by other paragraphs, but never specified.
llvm-svn: 275075
diff --git a/clang/docs/CommandGuide/clang.rst b/clang/docs/CommandGuide/clang.rst
index 2b45695..3143626 100644
--- a/clang/docs/CommandGuide/clang.rst
+++ b/clang/docs/CommandGuide/clang.rst
@@ -184,7 +184,7 @@
(either via :option:`-fobjc-nonfragile-abi`, or because it is the platform
default).
-.. option:: -fobjc-nonfragile-abi
+.. option:: -fobjc-nonfragile-abi, -fno-objc-nonfragile-abi
Enable use of the Objective-C non-fragile ABI. On platforms for which this is
the default ABI, it can be disabled with :option:`-fno-objc-nonfragile-abi`.
@@ -300,7 +300,7 @@
This flag sets the default visibility level.
-.. option:: -fcommon
+.. option:: -fcommon, -fno-common
This flag specifies that variables without initializers get common linkage.
It can be disabled with :option:`-fno-common`.