remove MainIcon from alt layout color command

HMI/README.md

@@ -77,7 +77,7 @@ change the page type:
 
 `weatherUpdate~tMainIcon~tMainText~tForecast1~tF1Icon~tForecast1Val~tForecast2~tF2Icon~tForecast2Val~tForecast3~tF3Icon~tForecast3Val~tForecast4~tF4Icon~tForecast4Val~optionalLayoutIcon~optionalLayoutText`
 
-`color~background~time~timeAMPM~date~tMainIcon~tMainText~tForecast1~tForecast2~tForecast3~tForecast4~tF1Icon~tF2Icon~tF3Icon~tF4Icon~tForecast1Val~tForecast2Val~tForecast3Val~tForecast4Val~bar~tMainIconAlt~tMainTextAlt~tMRIcon~tMR`
+`color~background~time~timeAMPM~date~tMainIcon~tMainText~tForecast1~tForecast2~tForecast3~tForecast4~tF1Icon~tF2Icon~tF3Icon~tF4Icon~tForecast1Val~tForecast2Val~tForecast3Val~tForecast4Val~bar~tMRIcon~tMR`
 
 `notify~heading~text`