More rewording

src/common.rs

@@ -7,9 +7,9 @@
 
 mod sealed {
     /// A [sealed trait](https://predr.ag/blog/definitive-guide-to-sealed-traits-in-rust/)
-    /// which stops this trait from being derived outside the library. This could be relaxed
-    /// in the future if there is are good reasons to allow external impls.  The benefit
-    /// gained from being sealed is that we can add methods without breaking downstream
+    /// which stops [super::FloatFuncs] from being implemented outside kurbo. This could
+    /// be relaxed in the future if there is are good reasons to allow external impls.
+    /// The benefit from being sealed is that we can add methods without breaking downstream
     /// implementations.
     pub trait FloatFuncsSealed {}
 }