main/qt5-*/APKBUILD: use double quotation marks in URL (!119)

Let pmbootstrap properly parse the package URLs, this is required for
the next commit where we start comparing the pkgver of all QT packages
- based on the URL like we do it for the KDE packages.

main/qt5-qtvirtualkeyboard/APKBUILD

@@ -4,7 +4,7 @@ pkgname=qt5-qtvirtualkeyboard
 pkgver=5.12.0
 pkgrel=0
 arch="all"
-url='http://qt-project.org/'
+url="http://qt-project.org/"
 license="GPL-3.0 GPL-2.0 LGPL-3.0"
 pkgdesc='Virtual keyboard framework'
 depends=""

main/qt5-qtwayland/APKBUILD

@@ -4,7 +4,7 @@ pkgname=qt5-qtwayland
 pkgver=5.12.0
 pkgrel=0
 arch="all"
-url='http://qt-project.org/'
+url="http://qt-project.org/"
 license="GPL-3.0 GPL-2.0 LGPL-3.0"
 pkgdesc='Provides APIs for Wayland'
 depends="qt5-qtdeclarative libxcomposite wayland qt5-qtquickcontrols2"