Update code and typo

Author: Anonymous-AAA

src/app/docs/tour/3-discovery/page.mdx

@@ -11,11 +11,11 @@ There are different implementations of the discovery service in iroh, the most p
 Iroh endpoints come with some defaults that include using our public infrastructure to enable discovery:
 
 ```rust
-use iroh::{Endpoint, RelayMode};
+use iroh::Endpoint;
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
-    let builder = Endpoint::.bind().await?;
+    let endpoint = Endpoint::bind().await?;
 
     println!("endpoint id: {:?}", endpoint.id());
     Ok(())
@@ -45,7 +45,7 @@ tokio = "1.43.0"
 And with that we can set up local discovery, alongside our default discovery:
 
 ```rust
-use iroh::{Endpoint, RelayMode, SecretKey};
+use iroh::Endpoint;
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {

src/app/docs/tour/4-protocols/page.mdx

@@ -11,7 +11,7 @@ Coming from the world of HTTP client/server models, protocols are kinda like req
 Protocols are an ever-growing topic, but to give you a basic idea, let's add the [blobs](/proto/iroh-blobs) protocol. First we need to add it to our dependencies:
 
 ```
-cargo add iroh-blobs --features=rpc
+cargo add iroh-blobs
 ```
 
 then adjust our code:

src/app/docs/tour/5-routers/page.mdx

@@ -14,24 +14,26 @@ Then we can setup gossip & add it to our router:
 
 ```rust
 use iroh::{protocol::Router, Endpoint};
-use iroh_blobs::net_protocol::Blobs;
-use iroh_gossip::{net::Gossip, ALPN};
+use iroh_blobs::{store::mem::MemStore, BlobsProtocol};
+use iroh_gossip::Gossip;
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
-    let endpoint = Endpoint::bind().await?;
-
-    let blobs = Blobs::memory().build(&endpoint);
-
-    let gossip = Gossip::builder().spawn(endpoint.clone()).await?;
-
-    // build the router
-    let router = Router::builder(endpoint)
-        .accept(iroh_blobs::ALPN, blobs.clone())
-        .accept(iroh_gossip::ALPN, gossip.clone())
+    let endpoint= Endpoint::bind().await?;
+    let store=MemStore::new();
+    let blobs=BlobsProtocol::new(&store,None);
+    
+    let gossip=Gossip::builder().spawn(endpoint.clone());
+    
+    
+    //build the router
+    let router=Router::builder(endpoint)
+        .accept(iroh_blobs::ALPN, blobs)
+        .accept(iroh_gossip::ALPN, gossip)
         .spawn();
-
+    
     router.shutdown().await?;
+    
     Ok(())
 }
 ```