Fix typo in schema.cljc (#27455)

comparision -> comparison
[ci skip]

shared/src/metabase/mbql/schema.cljc

@@ -300,7 +300,7 @@
 ;; `wrap-value-literals` middleware. This is done to make it easier to implement query processors, because most driver
 ;; implementations dispatch off of Object type, which is often not enough to make informed decisions about how to
 ;; treat certain objects. For example, a string compared against a Postgres UUID Field needs to be parsed into a UUID
-;; object, since text <-> UUID comparision doesn't work in Postgres. For this reason, raw literals in `:filter`
+;; object, since text <-> UUID comparison doesn't work in Postgres. For this reason, raw literals in `:filter`
 ;; clauses are wrapped in `:value` clauses and given information about the type of the Field they will be compared to.
 (defclause ^:internal value
   value    s/Any