chore: fix mlua::lua()'s docs

Author: noib3

src/lib.rs

@@ -52,9 +52,9 @@ pub mod mlua {
 
     pub use mlua::*;
 
-    /// Returns a static reference to a
-    /// [`mlua::Lua`](https://docs.rs/mlua/latest/mlua/struct.Lua.html) object
-    /// which can be used to interact with Lua plugins.
+    /// Returns a
+    /// [`mlua::Lua`](https://docs.rs/mlua/latest/mlua/struct.Lua.html)
+    /// instance which can be used to interact with Lua plugins.
     ///
     /// # Examples
     ///