chore: Update README with new command

AlexJuca · AlexJuca · commit 1197794e193a · 2026-01-08T22:29:17.000+01:00
diff --git a/README.md b/README.md
@@ -96,6 +96,7 @@ $ ./fkvs-cli -h 127.0.0.1 -p 5995 --non-interactive
 - INCR key
 - INCRBY key value
 - DECR key
+- DECRBY key value
 - INFO
 
 ## Contributing
