Tell user about 'kamal lock help' when deploy fails due to a lock

lib/kamal/cli/base.rb

@@ -124,7 +124,7 @@ module Kamal::Cli
       rescue SSHKit::Runner::ExecuteError => e
         if e.message =~ /cannot create directory/
           on(KAMAL.primary_host) { puts capture_with_debug(*KAMAL.lock.status) }
-          raise LockError, "Deploy lock found. See https://kamal-deploy.org/docs/commands#checking-and-setting-the-lock"
+          raise LockError, "Deploy lock found. Run 'kamal lock help' for more information"
         else
           raise e
         end

test/integration/lock_test.rb

@@ -10,7 +10,7 @@ class LockTest < IntegrationTest
     assert_match /Locked by: Deployer at .*\nVersion: #{latest_app_version}\nMessage: Integration Tests/m, status
 
     error = kamal :deploy, capture: true, raise_on_error: false
-    assert_match /Deploy lock found/m, error
+    assert_match /Deploy lock found. Run 'kamal lock help' for more information/m, error
 
     kamal :lock, :release