docs: replace defunct git://github.com urls with https://

doc/languages-frameworks/vim.section.md

@@ -286,7 +286,7 @@ Sample output1:
 "reload" = buildVimPluginFrom2Nix { # created by nix#NixDerivation
   name = "reload";
   src = fetchgit {
-    url = "git://github.com/xolox/vim-reload";
+    url = "https://github.com/xolox/vim-reload";
     rev = "0a601a668727f5b675cb1ddc19f6861f3f7ab9e1";
     sha256 = "0vb832l9yxj919f5hfg6qj6bn9ni57gnjd3bj7zpq7d4iv2s4wdh";
   };

nixos/modules/services/continuous-integration/buildbot/master.nix

@@ -64,7 +64,7 @@ in {
         description = "Factory Steps";
         default = [];
         example = [
-          "steps.Git(repourl='git://github.com/buildbot/pyflakes.git', mode='incremental')"
+          "steps.Git(repourl='https://github.com/buildbot/pyflakes.git', mode='incremental')"
           "steps.ShellCommand(command=['trial', 'pyflakes'])"
         ];
       };
@@ -74,7 +74,7 @@ in {
         description = "List of Change Sources.";
         default = [];
         example = [
-          "changes.GitPoller('git://github.com/buildbot/pyflakes.git', workdir='gitpoller-workdir', branch='master', pollinterval=300)"
+          "changes.GitPoller('https://github.com/buildbot/pyflakes.git', workdir='gitpoller-workdir', branch='master', pollinterval=300)"
         ];
       };
 

pkgs/applications/science/math/sage/README.md

@@ -17,7 +17,7 @@ If the build broke as a result of a package update, try those solutions in order
 - fix the problem yourself. First clone the sagemath source and then check out the sage version you want to patch:
 
 ```
-[user@localhost ~]$ git clone git://github.com/sagemath/sage.git
+[user@localhost ~]$ git clone https://github.com/sagemath/sage.git
 [user@localhost ~]$ cd sage
 [user@localhost sage]$ git checkout 8.2 # substitute the relevant version here
 ```
@@ -41,7 +41,7 @@ You can [login the sage trac using GitHub](https://trac.sagemath.org/login). You
 Here's the gist, assuming you want to use ssh key authentication. First, [add your public ssh key](https://trac.sagemath.org/prefs/sshkeys). Then:
 
 ```
-[user@localhost ~]$ git clone git://github.com/sagemath/sage.git
+[user@localhost ~]$ git clone https://github.com/sagemath/sage.git
 [user@localhost ~]$ cd sage
 [user@localhost sage]$ git remote add trac git@trac.sagemath.org:sage.git -t master
 [user@localhost sage]$ git checkout -b u/gh-<your-github-username>/<your-branch-name> develop