docs: fix spelling mistake in FlushCompress::Partial

Author: CosminPerRam

src/mem.rs

@@ -54,7 +54,7 @@ pub enum FlushCompress {
     ///
     /// All input data so far will be available to the decompressor (as with
     /// `Flush::Sync`). This completes the current deflate block and follows it
-    /// with an empty fixed codes block that is 10 bites long, and it assures
+    /// with an empty fixed codes block that is 10 bytes long, and it assures
     /// that enough bytes are output in order for the decompressor to finish the
     /// block before the empty fixed code block.
     Partial = ffi::MZ_PARTIAL_FLUSH as isize,