[PATCH] README: remove unnecessary comma in "System Administrator" section

[Achill Gilgenast]

Commas before "and" are unnecessary if they are used in the same
context, as it is here.

Fixes: b9a565b3e4d8 ("README: restructure with role-based documentation and guidelines")
Signed-off-by: Achill Gilgenast <achill@xxxxxxxxxx>
---
 README | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README b/README
index e6549b2a7aac..947265bc64ac 100644
--- a/README
+++ b/README
@@ -98,7 +98,7 @@ Maintain and stabilize kernel versions:
 System Administrator
 --------------------
 
-Configure, tune, and troubleshoot Linux systems:
+Configure, tune and troubleshoot Linux systems:
 
 * Admin Guide: Documentation/admin-guide/index.rst
 * Kernel Parameters: Documentation/admin-guide/kernel-parameters.rst
-- 
2.53.0