Update v6-to-v7.md (#3283)

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

docs/migrations/v6-to-v7.md

@@ -22,7 +22,7 @@ Add the following to the function call to the upgrade handler in `app/app.go`, t
 ```go
 import (
   // ...
-  ibctmmigrations "github.com/cosmos/ibc-go/v6/modules/light-clients/07-tendermint/migrations"
+  ibctmmigrations "github.com/cosmos/ibc-go/v7/modules/light-clients/07-tendermint/migrations"
 )
 
 // ...
@@ -54,7 +54,7 @@ To register the tendermint client, modify the `app.go` file to include the tende
 ```diff
 import (
   // ...
-+ ibctm "github.com/cosmos/ibc-go/v6/modules/light-clients/07-tendermint"
++ ibctm "github.com/cosmos/ibc-go/v7/modules/light-clients/07-tendermint"
 )
 
 // ...
@@ -76,7 +76,7 @@ To register the solo machine client, modify the `app.go` file to include the sol
 ```diff
 import (
   // ...
-+ solomachine "github.com/cosmos/ibc-go/v6/modules/light-clients/06-solomachine"
++ solomachine "github.com/cosmos/ibc-go/v7/modules/light-clients/06-solomachine"
 )
 
 // ...
@@ -274,8 +274,8 @@ IBC module constants have been moved from the `host` package to the `exported` p
 ```diff
 import (
   // ...
-- host "github.com/cosmos/ibc-go/v6/modules/core/24-host"
-+ ibcexported "github.com/cosmos/ibc-go/v6/modules/core/exported"
+- host "github.com/cosmos/ibc-go/v7/modules/core/24-host"
++ ibcexported "github.com/cosmos/ibc-go/v7/modules/core/exported"
   // ...
 )