[entrypoints] Fixed an incorrect "Learn more" link

Due to a spelling error, the "Learn more" link cannot navigate to the
corresponding content properly.

Fixed: 407220713
Change-Id: Ia6a1db51f878823a950e0019b1116eea6e5c6896
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6436669
Commit-Queue: Ho Cheung <hocheung@chromium.org>
Reviewed-by: Simon Zünd <szuend@chromium.org>
Reviewed-by: Jack Franklin <jacktfranklin@chromium.org>

Author: hocheung-chromium

front_end/entrypoints/main/MainImpl.ts

@@ -316,7 +316,7 @@ export class MainImpl {
     // Full Accessibility Tree
     Root.Runtime.experiments.register(
         'full-accessibility-tree', 'Enable full accessibility tree view in the Elements panel', undefined,
-        'https://developer.chrome.com/blog/new-in-devtools-90/#accesibility-tree',
+        'https://developer.chrome.com/blog/new-in-devtools-90/#accessibility-tree',
         'https://g.co/devtools/a11y-tree-feedback');
 
     // Font Editor