treewide: editorconfig fixes

- remove trailing whitespace
- use spaces for indentation

pkgs/misc/drivers/epson-201106w/default.nix

@@ -13,7 +13,7 @@ in
       # NOTE: Don't forget to update the webarchive link too!
       urls = [
         "https://download.ebz.epson.net/dsc/op/stable/SRPMS/epson-inkjet-printer-201106w-${version}-1lsb3.2.src.rpm"
-        "https://web.archive.org/web/https://download.ebz.epson.net/dsc/op/stable/SRPMS/epson-inkjet-printer-201106w-${version}-1lsb3.2.src.rpm"     
+        "https://web.archive.org/web/https://download.ebz.epson.net/dsc/op/stable/SRPMS/epson-inkjet-printer-201106w-${version}-1lsb3.2.src.rpm"
       ];
 
       sha256 = "1yig1xrh1ikblbp7sx706n5nnc237wy4mbch23ymy6akbgqg4aig";

pkgs/misc/drivers/epson-escpr/default.nix

@@ -8,7 +8,7 @@ stdenv.mkDerivation {
     # To find new versions, visit
     # http://download.ebz.epson.net/dsc/search/01/search/?OSC=LX and search for
     # some printer like for instance "WF-7110" to get to the most recent
-    # version.  
+    # version.
     # NOTE: Don't forget to update the webarchive link too!
     urls = [
       "https://download3.ebz.epson.net/dsc/f/03/00/09/83/26/f90d0f70b33a9d7d77a2408364c47fba1ccbf943/epson-inkjet-printer-escpr-1.7.3-1lsb3.2.tar.gz"

pkgs/misc/drivers/epson-escpr2/default.nix

@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
     # To find new versions, visit
     # http://download.ebz.epson.net/dsc/search/01/search/?OSC=LX and search for
     # some printer like for instance "WF-7210" to get to the most recent
-    # version.  
+    # version.
     # NOTE: Don't forget to update the webarchive link too!
     urls = [
       "https://download3.ebz.epson.net/dsc/f/03/00/12/09/63/b7d2bb6a97c9ad99a96ebc68f8abcb1254888e94/epson-inkjet-printer-escpr2-1.1.24-1lsb3.2.src.rpm"