fix typo

Author: jyecusch

docs/get-started/foundations/why-nitric.mdx

@@ -142,7 +142,7 @@ Future<List<int>> getReceiptDoc(String filename) async {
 
 </CodeSwitcher>
 
-Code like very clearly has a list expectations of the environment it runs in:
+Code like this very clearly has a list expectations of the environment it runs in:
 
 - I need a bucket to be available
 - I need to be able to read objects from that bucket