doc: fix typo in deprecations.md

PR-URL: #37282
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Pooja D P <Pooja.D.P@ibm.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Harshitha K P <harshitha014@gmail.com>

doc/api/deprecations.md

@@ -2480,7 +2480,7 @@ called, not whether `'finish'` has been emitted and the underlying data
 is flushed.
 
 Use [`response.writableFinished`][] or [`response.writableEnded`][]
-accordingly instead to avoid the ambigiuty.
+accordingly instead to avoid the ambiguity.
 
 To maintain existing behaviour `response.finished` should be replaced with
 `response.writableEnded`.