Issue #15527: remove double parens by changing markup.
Patch by Serhiy Storchaka.
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 9caebf1..5bfa351 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -329,7 +329,7 @@
.. function:: setpgrp()
- Call the system call :c:func:`setpgrp` or :c:func:`setpgrp(0, 0)` depending on
+ Call the system call :c:func:`setpgrp` or ``setpgrp(0, 0)`` depending on
which version is implemented (if any). See the Unix manual for the semantics.
Availability: Unix.