all: Update license url to https (ref #3976)

lib/rand/random.go

@@ -2,7 +2,7 @@
 //
 // This Source Code Form is subject to the terms of the Mozilla Public
 // License, v. 2.0. If a copy of the MPL was not distributed with this file,
-// You can obtain one at http://mozilla.org/MPL/2.0/.
+// You can obtain one at https://mozilla.org/MPL/2.0/.
 
 // Package rand implements functions similar to math/rand in the standard
 // library, but on top of a secure random number generator.

lib/rand/random_test.go

@@ -2,7 +2,7 @@
 //
 // This Source Code Form is subject to the terms of the Mozilla Public
 // License, v. 2.0. If a copy of the MPL was not distributed with this file,
-// You can obtain one at http://mozilla.org/MPL/2.0/.
+// You can obtain one at https://mozilla.org/MPL/2.0/.
 
 package rand
 

lib/rand/securesource.go

@@ -2,7 +2,7 @@
 //
 // This Source Code Form is subject to the terms of the Mozilla Public
 // License, v. 2.0. If a copy of the MPL was not distributed with this file,
-// You can obtain one at http://mozilla.org/MPL/2.0/.
+// You can obtain one at https://mozilla.org/MPL/2.0/.
 
 package rand
 

lib/rand/securesource_test.go

@@ -2,7 +2,7 @@
 //
 // This Source Code Form is subject to the terms of the Mozilla Public
 // License, v. 2.0. If a copy of the MPL was not distributed with this file,
-// You can obtain one at http://mozilla.org/MPL/2.0/.
+// You can obtain one at https://mozilla.org/MPL/2.0/.
 
 package rand