update docs to inform user hddtemp needs a daemon running

update docs to reflect hddtemp module needs daemon

glances/glances.py

@@ -3640,7 +3640,7 @@ def printSyntax():
     print(_("\t-t sec\t\tSet the refresh time in seconds (default: %d)" %
             refresh_time))
     print(_("\t-v\t\tDisplay the version and exit"))
-    print(_("\t-y\t\tEnable the hddtemp module"))    
+    print(_("\t-y\t\tEnable the hddtemp module (needs running hddtemp daemon)"))    
     print(_("\t-z\t\tDo not use the bold color attribute"))
 
 

man/glances.1

@@ -48,7 +48,7 @@ The command line options are the following:
 .PP
 	-v		Display the version and exit
 .PP
-	-y		Enable the hddtemp module
+	-y		Enable the hddtemp module (requires running hddtemp daemon)
 .PP
 	-z		Do not use the bold color attribute
 .PP