treewide: Per RFC45, remove all unquoted URLs

pkgs/development/arduino/arduino-core/default.nix

@@ -217,7 +217,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "Open-source electronics prototyping platform";
-    homepage = http://arduino.cc/;
+    homepage = "http://arduino.cc/";
     license = if withTeensyduino then licenses.unfreeRedistributable else licenses.gpl2;
     platforms = platforms.linux;
     maintainers = with maintainers; [ antono auntie robberer bjornfor bergey ];

pkgs/development/arduino/arduino-mk/default.nix

@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "Makefile for Arduino sketches";
-    homepage = https://github.com/sudar/Arduino-Makefile;
+    homepage = "https://github.com/sudar/Arduino-Makefile";
     license = stdenv.lib.licenses.lgpl21;
     maintainers = [ stdenv.lib.maintainers.eyjhb ];
     platforms = stdenv.lib.platforms.unix;

pkgs/development/arduino/ino/default.nix

@@ -38,7 +38,7 @@ python2Packages.buildPythonApplication rec {
 
   meta = {
     description = "Command line toolkit for working with Arduino hardware";
-    homepage = http://inotool.org/;
+    homepage = "http://inotool.org/";
     license = stdenv.lib.licenses.mit;
     maintainers = with stdenv.lib.maintainers; [ antono the-kenny ];
     platforms = stdenv.lib.platforms.linux;

pkgs/development/arduino/platformio/core.nix

@@ -95,7 +95,7 @@ in buildPythonApplication rec {
   meta = with stdenv.lib; {
     broken = stdenv.isAarch64;
     description = "An open source ecosystem for IoT development";
-    homepage = http://platformio.org;
+    homepage = "http://platformio.org";
     license = licenses.asl20;
     maintainers = with maintainers; [ mog makefu ];
   };