[PATCH] Documentation: fix typo and formattting in security/credentials.rst

[Mayank Gite]

- Fixes a typo in "Keys and keyrings" section. Replaces "keying" with
  "keyring".
- Updates formatting of keyring types.

Signed-off-by: Mayank Gite <drapl0n.kernel at gmail.com>
---
 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 d0191c8b8060..4996838491b1 100644
--- a/Documentation/security/credentials.rst
+++ b/Documentation/security/credentials.rst
@@ -189,9 +189,9 @@ The Linux kernel supports the following types of credentials:
      be searched for the desired key.  Each process may subscribe to a number
      of keyrings:
 
-	Per-thread keying
-	Per-process keyring
-	Per-session keyring
+	- Per-thread keyring
+	- Per-process keyring
+	- Per-session keyring
 
      When a process accesses a key, if not already present, it will normally be
      cached on one of these keyrings for future accesses to find.
-- 
2.53.0