Fix typo

Author: fwang

services/notes/serverless.yml

@@ -1,4 +1,4 @@
-service: notes-app-api
+service: notes-api
 
 # Create an optimized package for our functions
 package:
@@ -11,7 +11,7 @@ plugins:
 
 custom:
   # Our stage is based on what is passed in when running serverless
-  # commands. Or fallsback to what we have set in the provider section.
+  # commands. Or falls back to what we have set in the provider section.
   stage: ${opt:stage, self:provider.stage}
   # Name of the SST app that's deploying our infrastructure
   sstApp: ${self:custom.stage}-notes-infra