Auto merge of #22198 - Darkspirit:mpl_https, r=jdm

Update MPL license to https

Current MPL license (https://www.mozilla.org/en-US/MPL/2.0/) contains an https link:

> 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 https://mozilla.org/MPL/2.0/.

This change would not remove the summary above the LICENSE file. Tested [here](https://github.com/Darkspirit/darkspirit.github.io/blob/master/LICENSE).

I didn't update the `tests` folder with this change because I haven't yet looked into what needs to be considered with regards to WPT. Let's do that with a separate PR.

This change is splitted into multiple parts to prevent any "Load diff" button instead of a preview and was made with following commands:
```
git checkout -b mpl_https
kate python/tidy/servo_tidy/tidy.py
kate python/tidy/servo_tidy/licenseck.py
git add *
git commit -m "servo-tidy: Allow to use MPL with http and https"

find etc LICENSE mach ports python support -type f -not -path "python/tidy/servo_tidy/licenseck.py" -print0 | xargs -0 sed -i 's,http://mozilla.org/MPL/2.0/,https://mozilla.org/MPL/2.0/,g'
git add *
git commit -m "Update MPL license to https (part 1)"

find components/script/dom/webidls -type f -print0 | xargs -0 sed -i 's,http://mozilla.org/MPL/2.0/,https://mozilla.org/MPL/2.0/,g'
git add *
git commit -m "Update MPL license to https (part 2)"

find components/script -type f -print0 | xargs -0 sed -i 's,http://mozilla.org/MPL/2.0/,https://mozilla.org/MPL/2.0/,g'
git add *
git commit -m "Update MPL license to https (part 3)"

find components -type f -print0 | xargs -0 sed -i 's,http://mozilla.org/MPL/2.0/,https://mozilla.org/MPL/2.0/,g'
git add *
git commit -m "Update MPL license to https (part 4)"
./mach test-tidy --all
git push origin HEAD
```

---
- [x] `./mach test-tidy` does not report any errors

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3 files changed, 3 insertions, 3 deletions

diff --git a/components/script/dom/webgl_validations/mod.rs b/components/script/dom/webgl_validations/mod.rs
index 2e070c6d6bc..c590b6029c4 100644
--- a/components/script/dom/webgl_validations/mod.rs
+++ b/components/script/dom/webgl_validations/mod.rs
@@ -1,6 +1,6 @@
 /* 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/. */
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 pub trait WebGLValidator {
     type ValidatedOutput;
diff --git a/components/script/dom/webgl_validations/tex_image_2d.rs b/components/script/dom/webgl_validations/tex_image_2d.rs
index 09a96d37a1b..7cb192802f3 100644
--- a/components/script/dom/webgl_validations/tex_image_2d.rs
+++ b/components/script/dom/webgl_validations/tex_image_2d.rs
@@ -1,6 +1,6 @@
 /* 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/. */
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 use super::types::TexImageTarget;
 use super::WebGLValidator;
diff --git a/components/script/dom/webgl_validations/types.rs b/components/script/dom/webgl_validations/types.rs
index 5ff239ed898..fe5e7e35f59 100644
--- a/components/script/dom/webgl_validations/types.rs
+++ b/components/script/dom/webgl_validations/types.rs
@@ -1,6 +1,6 @@
 /* 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/. */
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 use canvas_traits::gl_enums;
 use crate::dom::bindings::codegen::Bindings::WebGLRenderingContextBinding::WebGLRenderingContextConstants;