Updated for Leaf 4.0.0 (#565)

Updated for Leaf 4.0.0

Co-authored-by: rpstro02 <email>

4.0/docs/leaf/getting-started.md

@@ -71,8 +71,8 @@ Hello, #(name)!
 Then, register a route (usually done in `routes.swift` or a controller) to render the view.
 
 ```swift
-router.get("hello") { req -> Future<View> in
-    return try req.view.render("hello", ["name": "Leaf"])
+router.get("hello") { req -> EventLoopFuture<View> in
+    return req.view.render("hello", ["name": "Leaf"])
 }
 ```
 

4.0/docs/leaf/overview.md

@@ -53,7 +53,7 @@ struct WelcomeContext: Encodable {
     var title: String
     var numbers: [Int]
 }
-return try req.view.render("home", WelcomeContext(title: "Hello!", numbers: [42, 9001]))
+return req.view.render("home", WelcomeContext(title: "Hello!", numbers: [42, 9001]))
 ```
 
 That will expose `title` and `numbers` to our Leaf template, which can then be used inside tags. For example:
@@ -124,7 +124,7 @@ struct SolarSystem: Codable {
     let planets = ["Venus", "Earth", "Mars"]
 }
 
-return try req.view.render("solarSystem", SolarSystem())
+return req.view.render("solarSystem", SolarSystem())
 ```
 
 We could then loop over them in Leaf like this: