doc(Logic): fix file refs (leanprover-community#33277)

Fix some stale documentation file refs.

Author: harahu

Mathlib/Logic/Equiv/Basic.lean

@@ -17,8 +17,9 @@ In this file we continue the work on equivalences begun in `Mathlib/Logic/Equiv/
 a lot of equivalences between various types and operations on these equivalences.
 
 More definitions of this kind can be found in other files.
-E.g., `Mathlib/Algebra/Equiv/TransferInstance.lean` does it for many algebraic type classes like
-`Group`, `Module`, etc.
+E.g., `Mathlib/Algebra/Group/TransferInstance.lean` does it for `Group`,
+`Mathlib/Algebra/Module/TransferInstance.lean` does it for `Module`, and similar files exist for
+other algebraic type classes.
 
 ## Tags
 

Mathlib/Logic/Equiv/Defs.lean

@@ -22,7 +22,7 @@ In this file we define two types:
   not equality!) to express that various `Type`s or `Sort`s are equivalent.
 
 * `Equiv.Perm α`: the group of permutations `α ≃ α`. More lemmas about `Equiv.Perm` can be found in
-  `Mathlib/GroupTheory/Perm.lean`.
+  `Mathlib/GroupTheory/Perm/`.
 
 Then we define
 
@@ -45,8 +45,9 @@ Then we define
   - `Equiv.decidableEq` takes `e : α ≃ β` and `[DecidableEq β]` and returns `DecidableEq α`.
 
   More definitions of this kind can be found in other files.
-  E.g., `Mathlib/Algebra/Equiv/TransferInstance.lean` does it for many algebraic type classes like
-  `Group`, `Module`, etc.
+  E.g., `Mathlib/Algebra/Group/TransferInstance.lean` does it for `Group`,
+  `Mathlib/Algebra/Module/TransferInstance.lean` does it for `Module`, and similar files exist for
+  other algebraic type classes.
 
 Many more such isomorphisms and operations are defined in `Mathlib/Logic/Equiv/Basic.lean`.
 

Mathlib/Logic/Equiv/PartialEquiv.lean

@@ -75,7 +75,7 @@ open Lean Meta Elab Tactic
 /-! Implementation of the `mfld_set_tac` tactic for working with the domains of partially-defined
 functions (`PartialEquiv`, `OpenPartialHomeomorph`, etc).
 
-This is in a separate file from `Mathlib/Logic/Equiv/MfldSimpsAttr.lean` because attributes need a
+This is in a separate file from `Mathlib/Tactic/Attr/Register.lean` because attributes need a
 new file to become functional.
 -/
 

Mathlib/Logic/Equiv/Sum.lean

@@ -24,8 +24,9 @@ In this file we continue the work on equivalences begun in `Mathlib/Logic/Equiv/
     satisfy the distributive law up to a canonical equivalence;
 
 More definitions of this kind can be found in other files.
-E.g., `Mathlib/Algebra/Equiv/TransferInstance.lean` does it for many algebraic type classes like
-`Group`, `Module`, etc.
+E.g., `Mathlib/Algebra/Group/TransferInstance.lean` does it for `Group`,
+`Mathlib/Algebra/Module/TransferInstance.lean` does it for `Module`, and similar files exist for
+other algebraic type classes.
 
 ## Tags