Minor edits

* Fix broken link
* Highlight property term

Author: tahoon-ms

powerapps-docs/maker/canvas-apps/controls/control-add-picture.md

@@ -140,7 +140,7 @@ Use the **[SaveData](../functions/function-savedata-loaddata.md)** function to s
 The same guidelines for **[Button](control-button.md)** and **[Image](control-image.md)** apply. In addition, consider the following:
 
 ### Color contrast
-* **Add media button** must have adequate contrast between its text and background. Since the uploaded image may have varying colors, use an opaque Fill on the **Add media button** to ensure consistent contrast.
+* **Add media button** must have adequate contrast between its text and background. Since the uploaded image may have varying colors, use an opaque **[Fill](properties-color-border.md)** on the **Add media button** to ensure consistent contrast.
 
 ### Screen reader support
 * **Add media button** must have **Text** and **ChangePictureText** that prompts the user to add or change a picture.

powerapps-docs/maker/canvas-apps/controls/control-screen.md

@@ -76,7 +76,7 @@ When the **Screen** is the effective background for text, there must be adequate
 
 For example, if a **Screen** contains a **[Label](control-text-box.md)** and the label has transparent fill, then the screen's **[Fill](properties-color-border.md)** effectively becomes the background color for the label.
 
-In addition to text, consider checking color contrast with essential graphical objects like the star images in a **[Rating](control-rating)** control.
+In addition to text, consider checking color contrast with essential graphical objects like the star images in a **[Rating](control-rating.md)** control.
 
 ### Screen reader support
 * There must be a meaningful name for each **Screen**. The screen name can be viewed and edited in the same way as other controls: in the tree view of the controls pane or in the header of the properties pane.