[WIP] Modify examples to not call unwrap

Author: luisbg

src/lib.rs

@@ -267,12 +267,12 @@ impl Url {
     /// ```rust
     /// use url::Url;
     ///
-    /// let base = Url::parse("https://example.net/a/b.html").unwrap();
-    /// let url = base.join("c.png").unwrap();
+    /// let base = Url::parse("https://example.net/a/b.html")?;
+    /// let url = base.join("c.png")?;
     /// assert_eq!(url.as_str(), "https://example.net/a/c.png");  // Not /a/b.html/c.png
     ///
-    /// let base = Url::parse("https://example.net/a/b/").unwrap();
-    /// let url = base.join("c.png").unwrap();
+    /// let base = Url::parse("https://example.net/a/b/")?;
+    /// let url = base.join("c.png")?;
     /// assert_eq!(url.as_str(), "https://example.net/a/b/c.png");
     /// ```
     #[inline]