Parameter: CRASH_DETECT Param doc update to add 1 in value set

As this was causing a CI check we made locally to compare param values to param_metadata generated xml file.

ArduPlane/Parameters.cpp

@@ -731,7 +731,7 @@ const AP_Param::Info Plane::var_info[] = {
     // @Param: CRASH_DETECT
     // @DisplayName: Crash Detection
     // @Description: Automatically detect a crash during AUTO flight and perform the bitmask selected action(s). Disarm will turn off motor for safety and to help against burning out ESC and motor. Set to 0 to disable crash detection.
-    // @Values: 0:Disabled
+    // @Values: 0:Disabled, 1:Disarm on crash
     // @Bitmask: 0:Disarm
     // @User: Advanced
     ASCALAR(crash_detection_enable,         "CRASH_DETECT",   0),