rust: fix a couple of doc comments

rust/src/cells/methods.rs

@@ -62,7 +62,7 @@ impl NcCell {
     ///
     /// - Breaks the UTF-8 string in `gcluster` down, setting up this NcCell.
     /// - Returns the number of bytes copied out of `gcluster`.
-    /// - The styling of the cell is left untouched, but any resources are released.
+    /// - Any resources are released.
     /// - Blasts the styling with `style` and `channels`.
     ///
     /// *C style function: [cell_prime()][crate::cell_prime].*

rust/src/notcurses/wrapper.rs

@@ -53,7 +53,7 @@ impl<'a> FullMode<'a> {
         raw_wrap![Notcurses::new()]
     }
 
-    /// New FullMode, without banners.
+    /// New FullMode, with banners.
     pub fn with_banners() -> NcResult<Self> {
         raw_wrap![Notcurses::with_banners()]
     }