build(go.mod): fix api path

[melekes]

fixes:

Running unit tests with coverage and race checks...
# github.com/cometbft/cometbft/types
../../../../go/pkg/mod/github.com/berachain/cometbft@v1.0.1-0.20250424093341-6fe80335f54a/types/params.go:391:13: updated.SbtEnableHeight undefined (type "github.com/cometbft/cometbft/api/cometbft/types/v1".FeatureParams has no field or method SbtEnableHeight)
../../../../go/pkg/mod/github.com/berachain/cometbft@v1.0.1-0.20250424093341-6fe80335f54a/types/params.go:392:76: updated.SbtEnableHeight undefined (type "github.com/cometbft/cometbft/api/cometbft/types/v1".FeatureParams has no field or method SbtEnableHeight)
../../../../go/pkg/mod/github.com/berachain/cometbft@v1.0.1-0.20250424093341-6fe80335f54a/types/params.go:507:22: params2.Feature.SbtEnableHeight undefined (type *"github.com/cometbft/cometbft/api/cometbft/types/v1".FeatureParams has no field or method SbtEnableHeight)
../../../../go/pkg/mod/github.com/berachain/cometbft@v1.0.1-0.20250424093341-6fe80335f54a/types/params.go:508:50: params2.Feature.GetSbtEnableHeight undefined (type *"github.com/cometbft/cometbft/api/cometbft/types/v1".FeatureParams has no field or method GetSbtEnableHeight)
../../../../go/pkg/mod/github.com/berachain/cometbft@v1.0.1-0.20250424093341-6fe80335f54a/types/params.go:543:4: unknown field SbtEnableHeight in struct literal of type "github.com/cometbft/cometbft/api/cometbft/types/v1".FeatureParams
../../../../go/pkg/mod/github.com/berachain/cometbft@v1.0.1-0.20250424093341-6fe80335f54a/types/params.go:572:54: pbParams.GetFeature().GetSbtEnableHeight undefined (type *"github.com/cometbft/cometbft/api/cometbft/types/v1".FeatureParams has no field or method GetSbtEnableHeight)