docs(rules/no-wait-for-multiple-assertions): fix typo (#1001)

Signed-off-by: Stan Stanislaus <[email protected]>

Author: Stan-Stani

docs/rules/no-wait-for-multiple-assertions.md

@@ -7,7 +7,7 @@
 ## Rule Details
 
 This rule aims to ensure the correct usage of `expect` inside `waitFor`, in the way that they're intended to be used.
-When using multiples assertions inside `waitFor`, if one fails, you have to wait for a timeout before seeing it failing.
+When using multiple assertions inside `waitFor`, if one fails, you have to wait for a timeout before seeing it failing.
 Putting one assertion, you can both wait for the UI to settle to the state you want to assert on,
 and also fail faster if one of the assertions do end up failing