Update triage priority documentation (#2362)

* Update triage priority documentation

* delete extra blank line

Author: jcollins-g

README.md

@@ -441,27 +441,36 @@ Some examples of likely triage priorities:
 * P0
   * Broken links, widespread
   * Uncaught exceptions, widespread
-  * Incorrect linkage, widespread
+  * Incorrect linkage outside of comment references, widespread
   * Very ugly or navigation impaired generated pages, widespread
+  * Generation errors for high priority users (Flutter, Pub, Fuchsia, Dart),
+    widespread and/or blocking critical teams
 
 * P1
   * Broken links, few or on edge cases
   * Uncaught exceptions, very rare or with simple workarounds
-  * Incorrect linkage, few or on edge cases
+  * Incorrect linkage outside of comment references, few or on edge cases
+  * Incorrect linkage in comment references, widespread or with high impact
   * Incorrect doc contents, widespread or with high impact
   * Minor display warts not significantly impeding navigation, widespread
   * Default-on warnings that are misleading or wrong, widespread
-  * Generation problems that should be detected but aren't warned, widespread
-  * Enhancements that have significant data around them indicating they are a big win
+  * Generation errors that should be detected but aren't warned, widespread
+  * Enhancements that have significant data around them indicating they are a
+    big win
   * User performance problem (e.g. page load, search), widespread
+  * Generation errors for high priority users (Flutter, Pub, Fuchsia, Dart),
+    not widespread or blocking critical teams
 
 * P2
   * Incorrect doc contents, not widespread
+  * Incorrect linkage in comment references, not widespread
   * Minor display warts not significantly impeding navigation, not widespread
-  * Generation problems that should be detected but aren't warned, not widespread
+  * Generation problems that should be detected but aren't warned, not
+    widespread
   * Default-on warnings that are misleading or wrong, few or on edge cases  
   * Non-default warnings that are misleading or wrong, widespread
-  * Enhancements considered important but without significant data indicating they are a big win
+  * Enhancements considered important but without significant data indicating
+    they are a big win
   * User performance problem (e.g. page load, search), not widespread
   * Generation performance problem, widespread
 
@@ -472,7 +481,6 @@ Some examples of likely triage priorities:
   * Enhancements whose importance is uncertain
   * Generation performance problem, limited impact or not widespread
 
-
 ## License
 
 Please see the [dartdoc license][].