Merge pull request #17392 from twbs/v4-dev-xmr-https

Use `https` when possible.

3 files changed, 4 insertions, 4 deletions

diff --git a/docs/components/forms.md b/docs/components/forms.md
index f45f207ca..2bf223b4d 100644
--- a/docs/components/forms.md
+++ b/docs/components/forms.md
@@ -603,7 +603,7 @@ We hide the default `<input>` with `opacity` and use the `.c-indicator` to build
 
 With the sibling selector (`~`), we use the `:checked` state to trigger a makeshift checked state on the custom control.
 
-In the checked states, we use **base64 embedded SVG icons** from [Open Iconic](http://useiconic.com/open). This provides us the best control for styling and positioning across browsers and devices.
+In the checked states, we use **base64 embedded SVG icons** from [Open Iconic](https://useiconic.com/open). This provides us the best control for styling and positioning across browsers and devices.
 
 #### Checkboxes
 
diff --git a/docs/components/modal.md b/docs/components/modal.md
index 2b28c1998..c4869255b 100644
--- a/docs/components/modal.md
+++ b/docs/components/modal.md
@@ -180,7 +180,7 @@ Additionally, you may give a description of your modal dialog with `aria-describ
 {% callout info %}
 #### Embedding YouTube videos
 
-Embedding YouTube videos in modals requires additional JavaScript not in Bootstrap to automatically stop playback and more. [See this helpful Stack Overflow post](http://stackoverflow.com/questions/18622508/bootstrap-3-and-youtube-in-modal) for more information.
+Embedding YouTube videos in modals requires additional JavaScript not in Bootstrap to automatically stop playback and more. [See this helpful Stack Overflow post](https://stackoverflow.com/questions/18622508/bootstrap-3-and-youtube-in-modal) for more information.
 {% endcallout %}
 
 ## Optional sizes
@@ -316,7 +316,7 @@ To take advantage of the Bootstrap grid system within a modal, just nest `.conta
 
 ## Varying modal content based on trigger button
 
-Have a bunch of buttons that all trigger the same modal, just with slightly different contents? Use `event.relatedTarget` and [HTML `data-*` attributes](https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Using_data_attributes) (possibly [via jQuery](http://api.jquery.com/data/)) to vary the contents of the modal depending on which button was clicked. See the Modal Events docs for details on `relatedTarget`.
+Have a bunch of buttons that all trigger the same modal, just with slightly different contents? Use `event.relatedTarget` and [HTML `data-*` attributes](https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Using_data_attributes) (possibly [via jQuery](https://api.jquery.com/data/)) to vary the contents of the modal depending on which button was clicked. See the Modal Events docs for details on `relatedTarget`.
 
 {% example html %}
 <div class="bd-example">
diff --git a/docs/components/scrollspy.md b/docs/components/scrollspy.md
index c2625a04b..9d78e6a72 100644
--- a/docs/components/scrollspy.md
+++ b/docs/components/scrollspy.md
@@ -96,7 +96,7 @@ Navbar links must have resolvable id targets. For example, a `<a href="#home">ho
 {% callout info %}
 #### Non-`:visible` target elements ignored
 
-Target elements that are not [`:visible` according to jQuery](http://api.jquery.com/visible-selector/) will be ignored and their corresponding nav items will never be highlighted.
+Target elements that are not [`:visible` according to jQuery](https://api.jquery.com/visible-selector/) will be ignored and their corresponding nav items will never be highlighted.
 {% endcallout %}
 
 ### Methods