[PATCH v2] Security: Documentation: Replace deprecated :c:func: Usage

[Puranjay Mohan]

Replace :c:func: with ``func()`` as the previous usage is deprecated.
Remove an extra ')' to fix broken cross reference.

Signed-off-by: Puranjay Mohan <puranjay12@xxxxxxxxx>
---
V2: Remove ``quotes`` around function names
V1: Change the subject line and remove deprecated :c:func: usage
---
 Documentation/security/credentials.rst | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/security/credentials.rst b/Documentation/security/credentials.rst
index 282e79feee6a..15175b11336c 100644
--- a/Documentation/security/credentials.rst
+++ b/Documentation/security/credentials.rst
@@ -453,9 +453,9 @@ still at this point.
 
 When replacing the group list, the new list must be sorted before it
 is added to the credential, as a binary search is used to test for
-membership.  In practice, this means :c:func:`groups_sort` should be
-called before :c:func:`set_groups` or :c:func:`set_current_groups`.
-:c:func:`groups_sort)` must not be called on a ``struct group_list`` which
+membership.  In practice, this means groups_sort() should be
+called before set_groups() or set_current_groups().
+groups_sort() must not be called on a ``struct group_list`` which
 is shared as it may permute elements as part of the sorting process
 even if the array is already sorted.
 
-- 
2.27.0