Update comments to dnf for Fedora

Author: braydonf

dist-assets/linux/after-remove.sh

@@ -64,7 +64,7 @@ case $@ in
   # apt remove passes "remove"
   "remove")
     ;;
-  # yum remove passes a 0
+  # dnf remove passes a 0
   "0")
     remove_logs_and_cache
     remove_config

dist-assets/linux/daemon/postrm

@@ -30,7 +30,7 @@ case $@ in
   "remove")
     remove_symlinks
     ;;
-  # yum remove passes a 0
+  # dnf remove passes a 0
   "0")
     remove_logs_and_cache
     remove_config