Update epsonworkforce.markdown (#9371)

* Update epsonworkforce.markdown

* Remove tailing whitespaces

source/_components/epsonworkforce.markdown

@@ -25,6 +25,7 @@ sensor:
      host: IP_ADDRESS
      monitored_conditions:
      - black
+     - photoblack
      - yellow
      - magenta
      - cyan
@@ -43,6 +44,8 @@ monitored_conditions:
   keys:
     black:
       description: The black ink cartridge
+    photoblack:
+      description: The photo black ink cartridge (not supported by all printers).
     yellow:
       description: The yellow ink cartridge.
     magenta:
@@ -55,11 +58,14 @@ monitored_conditions:
 
 Supported devices:
 
-- Epson Workforce printers who publish a HTTP page containing the ink cardridge levels
+- Epson Workforce (and some EcoTank) printers who publish a HTTP page containing the ink cardridge levels
 
 Tested devices:
 
 - Epson WF3540
+- Epson WF3620
+- Epson WF3640
+- Epson EcoTank ET-77x0
 
 To make this module work you need to connect your printer to your LAN.
-The best is to navigate to the IP of the printer to check if it shows a status page.
+The best is to navigate to the status page of the printer to check if it shows the page with the ink levels on the URL http://<IP_ADDRESS>/PRESENTATION/HTML/TOP/PRTINFO.HTML