[doc] fix the reference to using OpenOptions::open

Author: cuviper

src/libstd/sys/unix/ext/fs.rs

@@ -303,7 +303,7 @@ impl PermissionsExt for Permissions {
 pub trait OpenOptionsExt {
     /// Sets the mode bits that a new file will be created with.
     ///
-    /// If a new file is created as part of a `File::open_opts` call then this
+    /// If a new file is created as part of an `OpenOptions::open` call then this
     /// specified `mode` will be used as the permission bits for the new file.
     /// If no `mode` is set, the default of `0o666` will be used.
     /// The operating system masks out bits with the system's `umask`, to produce

src/libstd/sys/vxworks/ext/fs.rs

@@ -304,7 +304,7 @@ impl PermissionsExt for Permissions {
 pub trait OpenOptionsExt {
     /// Sets the mode bits that a new file will be created with.
     ///
-    /// If a new file is created as part of a `File::open_opts` call then this
+    /// If a new file is created as part of an `OpenOptions::open` call then this
     /// specified `mode` will be used as the permission bits for the new file.
     /// If no `mode` is set, the default of `0o666` will be used.
     /// The operating system masks out bits with the system's `umask`, to produce