Update Available colors section for area and tile cards (home-assistant#40933)

Author: krzysdabro

source/_dashboards/area.markdown

@@ -104,7 +104,7 @@ type: area
 area: bedroom
 display_type: picture
 navigation_path: my_bedroom
-sensor_classes: 
+sensor_classes:
   - temperature
   - humidity
 alert_classes:
@@ -116,4 +116,4 @@ features:
 
 ## Available colors
 
-You want to colorize the area card? Choose one of the following colors: `primary`, `accent`, `disabled`, `red`, `pink`, `purple`, `deep-purple`, `indigo`, `blue`, `light-blue`, `cyan`, `teal`, `green`, `light-green`, `lime`, `yellow`, `amber`, `orange`, `deep-orange`, `brown`, `grey`, `blue-grey`, `black`, and `white`.
+The following colors are available to colorize the area card: `primary`, `accent`, `disabled`, `red`, `pink`, `purple`, `deep-purple`, `indigo`, `blue`, `light-blue`, `cyan`, `teal`, `green`, `light-green`, `lime`, `yellow`, `amber`, `orange`, `deep-orange`, `brown`, `grey`, `blue-grey`, `black`, `white`, or any hex color code (for example, `#93c47d`).

source/_dashboards/tile.markdown

@@ -132,7 +132,7 @@ hide_state: true
 ```yaml
 type: tile
 entity: light.living_room
-state_content: 
+state_content:
   - state
   - brightness
   - last-changed
@@ -150,6 +150,6 @@ features:
 
 ## Available colors
 
-You want to colorize the tile card? Choose one of the following colors: `primary`, `accent`, `disabled`, `red`, `pink`, `purple`, `deep-purple`, `indigo`, `blue`, `light-blue`, `cyan`, `teal`, `green`, `light-green`, `lime`, `yellow`, `amber`, `orange`, `deep-orange`, `brown`, `grey`, `blue-grey`, `black` and `white`.
+The following colors are available to colorize the tile card: `primary`, `accent`, `disabled`, `red`, `pink`, `purple`, `deep-purple`, `indigo`, `blue`, `light-blue`, `cyan`, `teal`, `green`, `light-green`, `lime`, `yellow`, `amber`, `orange`, `deep-orange`, `brown`, `grey`, `blue-grey`, `black`, `white`, or any hex color code (for example, `#93c47d`).