Fix broken link to Snagit (#56493)

Co-authored-by: mc <[email protected]>

Author: vgrl

content/contributing/writing-for-github-docs/creating-screenshots.md

@@ -130,7 +130,7 @@ If the primary goal in showing a dropdown menu is to help the reader distinguish
 
 ## Highlighting elements in screenshots
 
-To highlight a specific UI element in a screenshot, use our special theme for [Snagit](https://www.techsmith.com/screen-capture.html) to apply a contrasting stroke around the element.
+To highlight a specific UI element in a screenshot, use our special theme for [Snagit](https://www.techsmith.com/snagit/) to apply a contrasting stroke around the element.
 
 The stroke is the color `fg.severe` in the [Primer Design System](https://primer.style/design/) (HEX #BC4C00 or RGB 188, 76, 0). This dark orange has good color contrast on both white and black. To check contrast on other background colors, use the [Color Contrast Analyzer](https://www.tpgi.com/color-contrast-checker/).