docs: Update clearLocalStorage docs to properly document what it yields (#5814)

* docs: Update clearLocalStorage docs to properly document what it yields

* Update assertions area to mention assertion chaining behavior

Author: jennifer-shehane

docs/api/commands/clearlocalstorage.mdx

@@ -48,7 +48,7 @@ Pass in an options object to change the default behavior of
 
 ### Yields [<Icon name="question-circle"/>](/guides/core-concepts/introduction-to-cypress#Subject-Management) {#Yields}
 
-- `cy.clearLocalStorage()` yields `null`.
+- `cy.clearLocalStorage()` yields the localStorage for the current domain.
 
 ## Examples
 
@@ -82,7 +82,8 @@ cy.clearLocalStorage(/app-/)
 
 ### Assertions [<Icon name="question-circle"/>](/guides/core-concepts/introduction-to-cypress#Assertions) {#Assertions}
 
-- `cy.clearLocalStorage()` cannot have any assertions chained.
+- `cy.clearLocalStorage()` will only run assertions you have chained once, and
+  will not [retry](/guides/core-concepts/retry-ability).
 
 ### Timeouts [<Icon name="question-circle"/>](/guides/core-concepts/introduction-to-cypress#Timeouts) {#Timeouts}