Update the urls and image for embedded use case (#1012)

Author: shahmishal

_data/new-data/get-started/embedded/card-grid.yml

@@ -10,7 +10,7 @@ tertiary_cards:
   - name: "Go baremetal on STM32 chips"
     text: "For maximum control, you can run completely baremetal and use Swift MMIO to operate hardware devices."
     link_text: Open guide
-    link: https://swiftpackageindex.com/apple/swift-embedded-examples/main/documentation/embeddedswift/stm32baremetalguide
+    link: https://docs.swift.org/embedded/documentation/embedded/stm32baremetalguide
 text:
   Embedded Swift is not limited to specific hardware devices or platforms. It's versatile, it can be integrated with
   existing SDKs and build systems, and it can also be used for pure baremetal development. Most common ARM

_data/new-data/get-started/embedded/full-width-text-image-column.yml

@@ -6,4 +6,4 @@ link:
   text: Learn more
 image:
   url: /assets/images/get-started/ergonomic-performant@2x.png 
-  alt: An fpo image
+  alt: Ergonomic and performant

_data/new-data/get-started/embedded/headline-section.yml

@@ -1,5 +1,5 @@
 headline: Dive into Embedded Swift
 body: Explore how Embedded Swift tailors Swift’s features like generics, protocols, and async/await into a firmware‑optimized compilation mode that produces compact binaries with predictable performance for bare‑metal devices.
 link:
-  href: 'https://swiftpackageindex.com/apple/swift-embedded-examples/main/documentation/embeddedswift'
+  href: 'https://docs.swift.org/embedded/documentation/embedded/'
   copy: Learn more