Use correct separator in keywords.txt (#1008)

The Arduino IDE currently requires the use of a tab separator between
the name and identifier. Without this tab the keyword is not
highlighted.

Author: per1234

keywords.txt

@@ -58,7 +58,7 @@ MY_PASSIVE_NODE	LITERAL1
 MY_DEBUG	LITERAL1
 MY_DEBUGDEVICE	LITERAL1
 MY_DEBUG_OTA	LITERAL1
-MY_DEBUG_OTA_DISABLE_ACK  LITERAL1
+MY_DEBUG_OTA_DISABLE_ACK 	LITERAL1
 MY_SPECIAL_DEBUG	LITERAL1
 
 # OTA
@@ -77,10 +77,10 @@ MY_INCLUSION_MODE_FEATURE	LITERAL1
 MY_INCLUSION_BUTTON_FEATURE	LITERAL1
 MY_INCLUSION_MODE_BUTTON_PIN	LITERAL1
 MY_INCLUSION_MODE_DURATION	LITERAL1
-MY_OTA_LOG_RECEIVER_FEATURE LITERAL1
-MY_OTA_LOG_SENDER_FEATURE LITERAL1
-MY_DEBUG_OTA  LITERAL1
-MY_DEBUG_OTA_DISABLE_ACK  LITERAL1
+MY_OTA_LOG_RECEIVER_FEATURE	LITERAL1
+MY_OTA_LOG_SENDER_FEATURE	LITERAL1
+MY_DEBUG_OTA 	LITERAL1
+MY_DEBUG_OTA_DISABLE_ACK 	LITERAL1
 
 # Signing
 MY_DEBUG_VERBOSE_SIGNING	LITERAL1