Add comment for migration

x/ccv/provider/migrations/migrator.go

@@ -42,13 +42,15 @@ func (m Migrator) Migrate3to4(ctx sdktypes.Context) error {
 	return nil
 }
 
-// MigrateXtoY migrates x/ccvprovider state from consensus version 4 to 5.
+// Migrate4to5 migrates x/ccvprovider state from consensus version 4 to 5.
 // The migration consists of setting a top N of 95 for all registered consumer chains.
 func (m Migrator) Migrate4to5(ctx sdktypes.Context) error {
 	v5.MigrateTopNForRegisteredChains(ctx, m.providerKeeper)
 	return nil
 }
 
+// Migrate5to6 migrates x/ccvprovider state from consensus version 5 to 6.
+// The migration consists of computing and storing the minimal power in the top N for all registered consumer chains.
 func (m Migrator) Migrate5to6(ctx sdktypes.Context) error {
 	v6.MigrateMinPowerInTopN(ctx, m.providerKeeper)
 	return nil