fix(docs): add missing file in docs generation (#4016)

Signed-off-by: Charly Molter <[email protected]>

docs/generated/cmd/kuma-cp/kuma-cp.md

@@ -0,0 +1,25 @@
+## kuma-cp
+
+Universal Control Plane for Envoy-based Service Mesh
+
+### Synopsis
+
+Universal Control Plane for Envoy-based Service Mesh.
+
+### Options
+
+```
+  -h, --help                         help for kuma-cp
+      --log-level string             log level: one of off|info|debug (default "info")
+      --log-max-age int              maximum number of days to retain old log files based on the timestamp encoded in their filename (default 30)
+      --log-max-retained-files int   maximum number of the old log files to retain (default 1000)
+      --log-max-size int             maximum size in megabytes of a log file before it gets rotated (default 100)
+      --log-output-path string       path to the file that will be filled with logs. Example: if we set it to /tmp/kuma.log then after the file is rotated we will have /tmp/kuma-2021-06-07T09-15-18.265.log
+```
+
+### SEE ALSO
+
+* [kuma-cp migrate](kuma-cp_migrate.md)	 - Migrate database to which Control Plane is connected
+* [kuma-cp run](kuma-cp_run.md)	 - Launch Control Plane
+* [kuma-cp version](kuma-cp_version.md)	 - Print version
+