doc(Logic/Basic): fix mathlib3 name in doc-string (#38791)

Author: Komyyy

Mathlib/Logic/Basic.lean

@@ -83,11 +83,11 @@ in specific circumstances.
 
 For example, `ZMod p` is a field if and only if `p` is a prime number.
 In order to be able to find this field instance automatically by type class search,
-we have to turn `p.prime` into an instance implicit assumption.
+we have to turn `p.Prime` into an instance implicit assumption.
 
-On the other hand, making `Nat.prime` a class would require a major refactoring of the library,
-and it is questionable whether making `Nat.prime` a class is desirable at all.
-The compromise is to add the assumption `[Fact p.prime]` to `ZMod.field`.
+On the other hand, making `Nat.Prime` a class would require a major refactoring of the library,
+and it is questionable whether making `Nat.Prime` a class is desirable at all.
+The compromise is to add the assumption `[Fact p.Prime]` to `ZMod.instField`.
 
 In particular, this class is not intended for turning the type class system
 into an automated theorem prover for first-order logic. -/