Fix spelling of "instantiated" in rustdocs.

lib/src/http/content_type.rs

@@ -17,7 +17,7 @@ use http::hyper::mime::Mime;
 ///
 /// ## Example
 ///
-/// A Content-Type of `text/html; charset=utf-8` can be insantiated via the
+/// A Content-Type of `text/html; charset=utf-8` can be instantiated via the
 /// `HTML` constant:
 ///
 /// ```rust

lib/src/http/media_type.rs

@@ -58,7 +58,7 @@ impl Source {
 ///
 /// ## Example
 ///
-/// A media type of `application/json` can be insantiated via the `JSON`
+/// A media type of `application/json` can be instantiated via the `JSON`
 /// constant:
 ///
 /// ```rust

lib/src/http/status.rs

@@ -52,7 +52,7 @@ impl StatusClass {
 ///
 /// ## Example
 ///
-/// A status of `200 OK` can be insantiated via the `Ok` constant:
+/// A status of `200 OK` can be instantiated via the `Ok` constant:
 ///
 /// ```rust
 /// use rocket::http::Status;
@@ -61,7 +61,7 @@ impl StatusClass {
 /// let ok = Status::Ok;
 /// ```
 ///
-/// A status of `404 Not Found` can be insantiated via the `NotFound` constant:
+/// A status of `404 Not Found` can be instantiated via the `NotFound` constant:
 ///
 /// ```rust
 /// use rocket::http::Status;