Merge pull request rails#51433 from ryo8000/fix-typo

Fixed typo in guides/README.md

Author: vipulnsward

guides/README.md

@@ -2,9 +2,9 @@
 
 ## About the Project
 
-The Rails Guides Visual Refresh occured in Q1 2024, and was intended to bring the visual style of the guides inline with the rubyonrails.org site. 
+The Rails Guides Visual Refresh occurred in Q1 2024, and was intended to bring the visual style of the guides inline with the rubyonrails.org site.
 
-## Editing Depedencies
+## Editing Dependencies
 
 The editing files for the Guides rebuild reside in `stylesrc` and use SCSS to improve developer experience. The code base relies on `include_media` (https://eduardoboucas.github.io/include-media/) to enable inline media-queries adjustments. We've also relied on the standard `normalize.css` (https://necolas.github.io/normalize.css/) to help bring all browsers together.
 
@@ -16,12 +16,12 @@ To generate new guides into static files, type `rake guides:generate` from insid
 
 ### Why are you not using CSS variables?
 
-Per the MDN documentation on CSS custom properties (https://developer.mozilla.org/en-US/docs/Web/CSS/Using_CSS_custom_properties), they are not supported in media or container queries at this point (Feb 2024). They may in future releases, and we should pivot to that when they are more wholistically supported. SCSS variables, because they are interpolated at build, serve a similar purpose and allow us the flexibilty to support much older browsers.
+Per the MDN documentation on CSS custom properties (https://developer.mozilla.org/en-US/docs/Web/CSS/Using_CSS_custom_properties), they are not supported in media or container queries at this point (Feb 2024). They may in future releases, and we should pivot to that when they are more wholistically supported. SCSS variables, because they are interpolated at build, serve a similar purpose and allow us the flexibility to support much older browsers.
 
 ### Why do we include LTR and RTL?
 
 LTR/RTL (Left to right/right to left) is a layout change based on the nature of the language the site is being displayed in. Arabic and Farsi are two well known "RTL" languages. If the site is automatically translated, then the layout will adjust (mirror horizontally) to be more in line with the text.
 
-### Why is Dark Mode in a seperate file
+### Why is Dark Mode in a separate file
 
 IncludeMedia does not handle `prefers-color-scheme` at this time, so it was extracted.