Remove duplicate example, point to examples on docs index page

examples/async.rs

@@ -2,6 +2,8 @@ use anyhow::Result;
 use backon::ExponentialBuilder;
 use backon::Retryable;
 
+// For more examples, please see: https://docs.rs/backon/#examples
+
 async fn fetch() -> Result<String> {
     let response = reqwest::get("https://httpbingo.org/unstable?failure_rate=0.7").await?;
     if !response.status().is_success() {

examples/blocking.rs

@@ -2,6 +2,8 @@ use anyhow::Result;
 use backon::BlockingRetryable;
 use backon::ExponentialBuilder;
 
+// For more examples, please see: https://docs.rs/backon/#examples
+
 fn fetch() -> Result<String> {
     Ok("hello, world!".to_string())
 }

examples/closure.rs

@@ -2,6 +2,8 @@ use anyhow::Result;
 use backon::BlockingRetryable;
 use backon::ExponentialBuilder;
 
+// For more examples, please see: https://docs.rs/backon/#examples
+
 fn main() -> Result<()> {
     let var = 42;
     // `f` can use input variables

src/retry.rs

@@ -38,28 +38,10 @@ use crate::Backoff;
 /// }
 /// ```
 ///
-/// # Example
+/// # Examples
 ///
-/// ```no_run
-/// use anyhow::Result;
-/// use backon::ExponentialBuilder;
-/// use backon::Retryable;
+/// For more examples, please see: [https://docs.rs/backon/#examples](https://docs.rs/backon/#examples)
 ///
-/// async fn fetch() -> Result<String> {
-///     Ok(reqwest::get("https://www.rust-lang.org")
-///         .await?
-///         .text()
-///         .await?)
-/// }
-///
-/// #[tokio::main(flavor = "current_thread")]
-/// async fn main() -> Result<()> {
-///     let content = fetch.retry(&ExponentialBuilder::default()).await?;
-///     println!("fetch succeeded: {}", content);
-///
-///     Ok(())
-/// }
-/// ```
 pub trait Retryable<
     B: BackoffBuilder,
     T,