Merge fixes for #13614, #13512 and #7719 from 3.2
diff --git a/Doc/library/sys.rst b/Doc/library/sys.rst
index 73914e3..93273c4 100644
--- a/Doc/library/sys.rst
+++ b/Doc/library/sys.rst
@@ -833,7 +833,7 @@
    For other systems, the values are:
 
    ================ ===========================
-   System           :data:`platform` value
+   System           ``platform`` value
    ================ ===========================
    Linux            ``'linux'``
    Windows          ``'win32'``