(MINOR) Drops render method in favor of view

When using Templates::Renderable the method render has been replaced with
`view` this is to remove redundancy from the Response#render method.

To upgrade simply rename render to view for all classes, structs
that uses Templates::Renderable

playground/responses/html_response.cr

@@ -7,7 +7,7 @@ module ExampleApp
     end
 
     def render
-      render "example.html", {name: @name}
+      view "example.html", {name: @name}
     end
   end
 end

src/azu/templates.cr

@@ -24,10 +24,6 @@ module Azu
         CONFIG.templates.load(template).render(data)
       end
 
-      private def render(template : String = page_path, data = Hash(String, String).new)
-        view template, data
-      end
-
       def page_path
         "#{self.class.name.split("::")[1..-1].join("/").underscore.downcase}.jinja"
       end