Fix a few typos

src/read.rs

@@ -957,7 +957,7 @@ impl<'a> ZipFile<'a> {
         match self.data.system {
             System::Unix => Some(self.data.external_attributes >> 16),
             System::Dos => {
-                // Interpret MSDOS directory bit
+                // Interpret MS-DOS directory bit
                 let mut mode = if 0x10 == (self.data.external_attributes & 0x10) {
                     ffi::S_IFDIR | 0o0775
                 } else {

src/write.rs

@@ -727,7 +727,7 @@ impl<W: Write + io::Seek> ZipWriter<W> {
 
     /// Add a directory entry, taking a Path as argument.
     ///
-    /// This function ensures that the '/' path seperator is used. It also ignores all non 'Normal'
+    /// This function ensures that the '/' path separator is used. It also ignores all non 'Normal'
     /// Components, such as a starting '/' or '..' and '.'.
     #[deprecated(
         since = "0.5.7",