improve title

Author: MaryaBelanger

src/content/effective-dart/_toc.md

@@ -105,7 +105,7 @@ the project:
 * <a href='/effective-dart/usage#dont-use-an-explicit-default-value-of-null'>DON'T use an explicit default value of <code>null</code>.</a>
 * <a href='/effective-dart/usage#dont-use-true-or-false-in-equality-operations'>DON'T use <code>true</code> or <code>false</code> in equality operations.</a>
 * <a href='/effective-dart/usage#avoid-late-variables-if-you-need-to-check-whether-they-are-initialized'>AVOID <code>late</code> variables if you need to check whether they are initialized.</a>
-* <a href='/effective-dart/usage#consider-work-arounds-to-enable-type-promotion-for-nullable-fields'>CONSIDER work arounds to enable type promotion for nullable fields.</a>
+* <a href='/effective-dart/usage#consider-type-promotion-or-null-check-patterns-for-using-nullable-types'>CONSIDER type promotion or null-check patterns for using nullable types.</a>
 
 **Strings**
 

src/content/effective-dart/usage.md

@@ -326,7 +326,7 @@ Of course, if `null` is a valid initialized value for the variable,
 then it probably does make sense to have a separate boolean field.
 
 
-### CONSIDER work arounds to enable type promotion for nullable fields
+### CONSIDER type promotion or null-check patterns for using nullable types
 
 Checking that a nullable variable is not equal to `null` promotes the variable
 to a non-nullable type. That lets you access members on the variable and pass it

src/content/guides/whats-new.md

@@ -126,7 +126,7 @@ we made the following changes to this site:
 * Reorganized and simplified site infrastructure across the board, in preparation
   to [move away from using Jekyll][].
 
-[type promotion]: /effective-dart/usage#consider-work-arounds-to-enable-type-promotion-for-nullable-fields
+[type promotion]: /effective-dart/usage#consider-type-promotion-or-null-check-patterns-for-using-nullable-types
 [Understanding Null Safety]: /null-safety/understanding-null-safety
 [C interop]: /interop/c-interop#native-assets
 [Breaking changes]: /resources/breaking-changes