treewide: follow some GitHub redirects for fetchFromGitHub (#538419)

pkgs/by-name/fl/flye/package.nix

@@ -56,7 +56,7 @@ python3Packages.buildPythonApplication (finalAttrs: {
 
   meta = {
     description = "De novo assembler for single molecule sequencing reads using repeat graphs";
-    homepage = "https://github.com/fenderglass/Flye";
+    homepage = "https://github.com/mikolmogorov/Flye";
     license = lib.licenses.bsd3;
     mainProgram = "flye";
     maintainers = with lib.maintainers; [ assistant ];

pkgs/by-name/gi/gitqlient/package.nix

@@ -42,7 +42,7 @@ stdenv.mkDerivation (finalAttrs: {
   env.NIX_CFLAGS_COMPILE = "-Wno-error=deprecated-declarations"; # QCheckBox::stateChanged is deprecated
 
   meta = {
-    homepage = "https://github.com/francescmm/GitQlient";
+    homepage = "https://github.com/francescmaestre/GitQlient";
     description = "Multi-platform Git client written with Qt";
     license = lib.licenses.lgpl2Plus;
     platforms = lib.platforms.linux;