fix: spelling errors in mini-apps documentation (#500)

* Update design-guidelines.mdx

* Update common-issues.mdx

Author: sashaodessa

docs/mini-apps/featured-guidelines/design-guidelines.mdx

@@ -4,7 +4,7 @@ description: "Build a mini app that is intuitive and delightful to use."
 ---
 
 ### Display 
-See how your mini app is displayed in the Base app in our [Figma sepcification file](https://www.figma.com/design/4wx6s24NB0KLgprQAyMT8R/TBA-Mini-App-Specs).
+See how your mini app is displayed in the Base app in our [Figma specification file](https://www.figma.com/design/4wx6s24NB0KLgprQAyMT8R/TBA-Mini-App-Specs).
 
 ### Layout 
 

docs/mini-apps/troubleshooting/common-issues.mdx

@@ -28,7 +28,7 @@ your-domain.com/
 Use Base Build's built-in Preview Tool for foundational debugging.
 
 <Card title="Preview Tool" img="/images/base-build/preview-tool-overview.png">
-Start debugging your app using the [Preivew tool](https://base.dev/preview)
+Start debugging your app using the [Preview tool](https://base.dev/preview)
 </Card>
 
 The **Preview tool** will help you: