Update CLI docs

app/_src/gateway/reference/cli.md

@@ -140,6 +140,19 @@ The available commands are:
                                         seconds).
                                         default: 60
 
+{% if_version gte:3.9.x %}
+  profiling memory-analyzer <start|status>
+                                        Trigger memory analyzer and generate
+                                        memory profiling data.
+
+    --timeout   (optional number)       Timeout for memory analyzer in seconds.
+                                        Default is 120 seconds.
+
+    --pid       (optional number)       Specific worker process ID to analyze.
+                                        If not provided, the current worker
+                                        process will be used.
+{% endif_version %}
+
   log_level get                         Get the logging level.
 {% if_version gte:3.8.x %}
   status                                Get the status of the Kong node.
@@ -176,6 +189,28 @@ EXIT CODES
 ```
 {% endif_version %}
 
+{% if_version gte:3.9.x %}
+---
+
+
+### kong drain
+
+```
+Usage: kong drain [OPTIONS]
+
+Make status listeners(`/status/ready`) return 503 Service Unavailable.
+
+Example usage:
+ kong drain
+
+Options:
+ -c,--conf    (optional string)  configuration file
+ -p,--prefix  (optional string)  override prefix directory
+
+```
+
+{% endif_version %}
+
 ---