AP_Arming: param doc fixes

These were confusing the parser, or just incorrect

libraries/APM_Control/AP_RollController.cpp

@@ -25,7 +25,7 @@
 extern const AP_HAL::HAL& hal;
 
 const AP_Param::GroupInfo AP_RollController::var_info[] PROGMEM = {
-	// @Param: T_CONST
+	// @Param: TCONST
 	// @DisplayName: Roll Time Constant
 	// @Description: This controls the time constant in seconds from demanded to achieved bank angle. A value of 0.5 is a good default and will work with nearly all models. Advanced users may want to reduce this time to obtain a faster response but there is no point setting a time less than the aircraft can achieve.
 	// @Range: 0.4 1.0

libraries/AP_Arming/AP_Arming.cpp

@@ -23,7 +23,7 @@ const AP_Param::GroupInfo AP_Arming::var_info[] PROGMEM = {
     // @Param: REQUIRE
     // @DisplayName: Require Arming Motors 
     // @Description: Arming disabled until some requirements are met. If 0, there are no requirements (arm immediately).  If 1, require rudder stick or GCS arming before arming motors and send THR_MIN PWM to throttle channel when disarmed.  If 2, require rudder stick or GCS arming and send 0 PWM to throttle channel when disarmed. See the ARMING_CHECK_* parameters to see what checks are done before arming. Note, if setting this parameter to 0 a reboot is required to arm the plane.  Also note, even with this parameter at 0, if ARMING_CHECK parameter is not also zero the plane may fail to arm throttle at boot due to a pre-arm check failure.
-    // @Values: 0:Disabled,1: THR_MIN PWM when disarmed,2: 0 PWM when disarmed 
+    // @Values: 0:Disabled,1:THR_MIN PWM when disarmed,2:0 PWM when disarmed
     // @User: Advanced
     AP_GROUPINFO("REQUIRE",     0,      AP_Arming,  require,                 0),
 
@@ -37,7 +37,7 @@ const AP_Param::GroupInfo AP_Arming::var_info[] PROGMEM = {
     // @Param: CHECK
     // @DisplayName: Arm Checks to Peform (bitmask)
     // @Description: Checks prior to arming motor. 
-    // @Values: 0: None, 1: All, 2: Barometer, 4: Compass, 8: GPS, 16: INS, 32: Parameters, 64: Manual RC Trasmitter, 128: Board voltage, 256: Battery Level 
+    // @Values: 0:None,1:All,2:Barometer,4:Compass,8:GPS,16:INS,32:Parameters,64:Manual RC Trasmitter,128:Board voltage,256:Battery Level 
     // @User: Advanced
     AP_GROUPINFO("CHECK",        2,     AP_Arming,  checks_to_perform,       0),