Use US locale consistently.

build/vnu-jar.js

@@ -38,7 +38,7 @@ childProcess.exec('java -version', (error, stdout, stderr) => {
     'The “color” input type is not supported in all browsers.*',
     'The “datetime-local” input type is not supported in all browsers.*',
     'The “time” input type is not supported in all browsers.*',
-    // IE11 doesn't recognise <main> / give the element an implicit "main" landmark.
+    // IE11 doesn't recognize <main> / give the element an implicit "main" landmark.
     // Explicit role="main" is redundant for other modern browsers, but still valid.
     'The “main” role is unnecessary for element “main”.'
   ].join('|')

site/content/docs/4.3/components/card.md

@@ -603,4 +603,4 @@ Just like with card groups, card footers in decks will automatically line up.
 
 ### Card columns (Masonry layout)
 
-In `v4` we used a CSS-only technique to mimic the behaviour of [Masonry](https://masonry.desandro.com/)-like columns, but this technique came with lots of unpleasant [side effects](https://github.com/twbs/bootstrap/pull/28922). If you want to have this type of layout in `v5`, you can just make use of Masonry plugin. **Masonry is not included in Bootstrap**, but we've made a [demo example]({{< docsref "/examples/masonry" >}}) to help you get started.
+In `v4` we used a CSS-only technique to mimic the behavior of [Masonry](https://masonry.desandro.com/)-like columns, but this technique came with lots of unpleasant [side effects](https://github.com/twbs/bootstrap/pull/28922). If you want to have this type of layout in `v5`, you can just make use of Masonry plugin. **Masonry is not included in Bootstrap**, but we've made a [demo example]({{< docsref "/examples/masonry" >}}) to help you get started.

site/content/docs/4.3/forms/layout.md

@@ -362,5 +362,5 @@ You may need to manually address the width and alignment of individual form cont
 {{< callout warning >}}
 ### Alternatives to hidden labels
 
-Assistive technologies such as screen readers will have trouble with your forms if you don't include a label for every input. For these inline forms, you can hide the labels using the `.sr-only` class. There are further alternative methods of providing a label for assistive technologies, such as the `aria-label`, `aria-labelledby` or `title` attribute. If none of these are present, assistive technologies may resort to using the `placeholder` attribute, if present, but note that use of `placeholder` as a replacement for other labelling methods is not advised.
+Assistive technologies such as screen readers will have trouble with your forms if you don't include a label for every input. For these inline forms, you can hide the labels using the `.sr-only` class. There are further alternative methods of providing a label for assistive technologies, such as the `aria-label`, `aria-labelledby` or `title` attribute. If none of these are present, assistive technologies may resort to using the `placeholder` attribute, if present, but note that use of `placeholder` as a replacement for other labeling methods is not advised.
 {{< /callout >}}

site/content/docs/4.3/getting-started/accessibility.md

@@ -53,5 +53,5 @@ Bootstrap includes support for the [`prefers-reduced-motion` media feature](http
 - [The A11Y Project](https://a11yproject.com/)
 - [MDN accessibility documentation](https://developer.mozilla.org/en-US/docs/Web/Accessibility)
 - [Tenon.io Accessibility Checker](https://tenon.io/)
-- [Colour Contrast Analyser (CCA)](https://developer.paciellogroup.com/resources/contrastanalyser/)
+- [Color Contrast Analyser (CCA)](https://developer.paciellogroup.com/resources/contrastanalyser/)
 - ["HTML Codesniffer" bookmarklet for identifying accessibility issues](https://github.com/squizlabs/HTML_CodeSniffer)