refactor: Fix some spelling mistakes in comments and whitespace

src/PostgREST/SchemaCache.hs

@@ -414,7 +414,7 @@ funcsSqlQuery = encodeUtf8 [trimming|
           WHEN 'character'::regtype THEN 'character varying'
           WHEN 'character[]'::regtype THEN 'character varying[]'
           ELSE type::regtype::text
-        END, -- convert types that ignore the lenth and accept any value till maximum size
+        END, -- convert types that ignore the length and accept any value till maximum size
         idx <= (pronargs - pronargdefaults), -- is_required
         COALESCE(mode = 'v', FALSE) -- is_variadic
       ) ORDER BY idx) AS args,

test/io/big_schema.sql

@@ -3,7 +3,7 @@ This is a 2018 version of the apflora schema https://github.com/barbalex/apf2/tr
 
 We use it to test our metadata generation because it contains a good amount of db objects.
 
-Custom roles and privileges where removed.
+Custom roles and privileges were removed.
 
 postgrest-with-postgresql-14 -f test/io/big_schema.sql psql