Fix invalid version literal

doc/manual/strings.rst

@@ -948,7 +948,7 @@ would only run with stable ``0.2`` versions, and exclude such versions as
 
 Another non-standard version specification extension allows one to use a trailing
 ``+`` to express an upper limit on build versions, e.g.  ``VERSION >
-"v"0.2-rc1+"`` can be used to mean any version above ``0.2-rc1`` and any of its
+v"0.2-rc1+"`` can be used to mean any version above ``0.2-rc1`` and any of its
 builds: it will return ``false`` for version ``v"0.2-rc1+win64"`` and ``true``
 for ``v"0.2-rc2"``.