fix whitespace

README.md

@@ -58,9 +58,9 @@ To explicitly enable the TCP transport while constructing a host, use the
 ``` go
 
 import (
-	"context"
+    "context"
 
-	libp2p "github.com/libp2p/go-libp2p"
+    libp2p "github.com/libp2p/go-libp2p"
     tcp "github.com/libp2p/go-tcp-transport"
 )
 
@@ -78,9 +78,9 @@ transport. To add multiple tranports, use `ChainOptions`:
 ``` go
 // TCP and QUIC:
 h, err := libp2p.New(ctx,
-  libp2p.ChainOptions(
-    libp2p.Transport(tcp.NewTCPTransport),
-    libp2p.Transport(quic.NewTransport)) // see https://github.com/libp2p/go-libp2p-quic-transport
+    libp2p.ChainOptions(
+        libp2p.Transport(tcp.NewTCPTransport),
+        libp2p.Transport(quic.NewTransport)) // see https://github.com/libp2p/go-libp2p-quic-transport
 )
 ```