Merge branch 'master' into patch-1

Author: skade

docs/src/concepts/tasks.md

@@ -17,7 +17,7 @@ async fn read_file(path: &str) -> Result<String, io::Error> {
 
 fn main() {
     let reader_task = task::spawn(async {
-        let result = read_file("data.csv");
+        let result = read_file("data.csv").await;
         match result {
             Ok(s) => println!("{}", s),
             Err(e) => println!("Error reading file: {:?}", e)
@@ -33,7 +33,7 @@ This asks the runtime baked into `async_std` to execute the code that reads a fi
 
 ```rust
 async {
-    let result = read_file("data.csv");
+    let result = read_file("data.csv").await;
     match result {
         Ok(s) => println!("{}", s),
         Err(e) => println!("Error reading file: {:?}", e)