Fix typos in 1717

Author: xzmeng

text/1717-dllimport.md

@@ -109,7 +109,7 @@ meaning that it will be common that these attributes are left off by accident.
 - Instead of enhancing `#[link]`, a `#[linked_from = "foo"]` annotation could be added.
   This has the drawback of not being able to handle native libraries whose
   name is unpredictable across platforms in an easy fashion, however.
-  Additionally, it adds an extra attribute to the comipler that wasn't known
+  Additionally, it adds an extra attribute to the compiler that wasn't known
   previously.
 
 - Support a `#[dllimport]` on extern blocks (or individual symbols, or both).