8.2.1-notes.rst: tweak binutils version

It's 2.27 (-2), not 1.27.2. Dropped stray '\r'.
Signed-off-by: Sergei Trofimovich <siarheit@google.com>

docs/users_guide/8.2.1-notes.rst

@@ -97,8 +97,8 @@ Compiler
 
     data TSyn = (T :: (forall k. k -> Type) -> Type)
 
-- The Mingw-w64 toolchain for the Windows version of GHC has been updated. GHC now uses
-  `GCC 6.2.0` and `binutils 1.27.2`.
+- The Mingw-w64 toolchain for the Windows version of GHC has been updated. GHC now uses
+  `GCC 6.2.0` and `binutils 2.27`.
 
 GHCi
 ~~~~