Simplify i3 workspaces with polybar icons

.config/i3/config

@@ -101,8 +101,8 @@ bindsym $mod+g gaps inner current set 0; gaps outer current set 0; exec picom_to
 
 # Define names for default workspaces for which we configure key bindings later on.
 # We use variables to avoid repeating the names in multiple places.
-set $ws1 "1:"
-set $ws2 "2:"
+set $ws1 "1"
+set $ws2 "2"
 set $ws3 "3"
 set $ws4 "4"
 set $ws5 "5"
@@ -110,7 +110,7 @@ set $ws6 "6"
 set $ws7 "7"
 set $ws8 "8"
 set $ws9 "9"
-set $ws10 "10:"
+set $ws10 "10"
 
 # switch to workspace
 bindsym $mod+1 workspace $ws1
@@ -206,7 +206,7 @@ exec_always --no-startup-id polybar-launch simple-top
 # default workspaces for most used apps
 # assign [class="^qutebrowser$"] → number 1
 # spotify needs for_window, see https://i3wm.org/docs/userguide.html#assign_workspace
-for_window [class="^spotify$"] number "10:"
+for_window [class="^spotify$"] number 10
 
 # autostart often used apps
 # needs to be done like this to both automatically start the apps on correct workspace