Update README.md

updated installation instruction links from https://homarr.dev/docs/introduction/installation to https://homarr.dev/docs/getting-started/installation/

README.md

@@ -25,7 +25,7 @@
     <strong>Demo ✨</strong>
   </a>
   •
-  <a href="https://homarr.dev/docs/introduction/installation">
+  <a href="https://homarr.dev/docs/getting-started/installation/">
     <strong>Install 💻</strong>
   </a> •
   <a href="https://translate.homarr.dev/">
@@ -98,7 +98,7 @@ https://user-images.githubusercontent.com/30572287/217098893-5880e7de-13d0-42c5-
 
 Since we are updating Homarr very frequently, we recommend reading our official installation guides:
 
-<a href="https://homarr.dev/docs/introduction/installation">
+<a href="https://homarr.dev/docs/getting-started/installation/">
   <img src="docs/installation-button.png" width="200" />
 </a>