Language detection feature flag expiry bump and flag description update.

R=aboxhall

Change-Id: Ie73667890a0f30ecb7eaa16a7f2797287e1d841b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1918792
Auto-Submit: Chris Hall <chrishall@chromium.org>
Reviewed-by: Alice Boxhall <aboxhall@chromium.org>
Commit-Queue: Chris Hall <chrishall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#715603}

chrome/browser/flag-metadata.json

@@ -1307,7 +1307,7 @@
   {
     "name": "enable-experimental-accessibility-language-detection",
     "owners": [ "chrishall", "//ui/accessibility/OWNERS" ],
-    "expiry_milestone": 80
+    "expiry_milestone": 82
   },
   {
     "name": "enable-experimental-accessibility-switch-access",

chrome/browser/flag_descriptions.cc

@@ -834,7 +834,7 @@ const char kExperimentalAccessibilityLanguageDetectionName[] =
     "Experimental accessibility language detection";
 const char kExperimentalAccessibilityLanguageDetectionDescription[] =
     "Enable language detection for in-page content which is then exposed to "
-    "accessiblity technologies such as screen readers.";
+    "assistive technologies such as screen readers.";
 
 const char kVizDisplayCompositorName[] = "Viz Display Compositor (OOP-D)";
 const char kVizDisplayCompositorDescription[] =

ui/accessibility/accessibility_switches.cc

@@ -24,7 +24,7 @@ const char kEnableExperimentalAccessibilityLabelsDebugging[] =
     "enable-experimental-accessibility-labels-debugging";
 
 // Enables language detection on in-page text content which is then exposed to
-// accessibility technology such as screen readers.
+// assistive technology such as screen readers.
 const char kEnableExperimentalAccessibilityLanguageDetection[] =
     "enable-experimental-accessibility-language-detection";