Fix grammar in iced_futures::maybe module

Author: hecrj

futures/src/maybe.rs

@@ -2,14 +2,14 @@
 mod platform {
     /// An extension trait that enforces `Send` only on native platforms.
     ///
-    /// Useful to write cross-platform async code!
+    /// Useful for writing cross-platform async code!
     pub trait MaybeSend: Send {}
 
     impl<T> MaybeSend for T where T: Send {}
 
     /// An extension trait that enforces `Sync` only on native platforms.
     ///
-    /// Useful to write cross-platform async code!
+    /// Useful for writing cross-platform async code!
     pub trait MaybeSync: Sync {}
 
     impl<T> MaybeSync for T where T: Sync {}
@@ -19,14 +19,14 @@ mod platform {
 mod platform {
     /// An extension trait that enforces `Send` only on native platforms.
     ///
-    /// Useful to write cross-platform async code!
+    /// Useful for writing cross-platform async code!
     pub trait MaybeSend {}
 
     impl<T> MaybeSend for T {}
 
     /// An extension trait that enforces `Sync` only on native platforms.
     ///
-    /// Useful to write cross-platform async code!
+    /// Useful for writing cross-platform async code!
     pub trait MaybeSync {}
 
     impl<T> MaybeSync for T {}