typo fixes all over the place

found and semi-manually replaced by using:
 codespell -L mut -L crate -i 3 -w

Mostly in comments, but also email notification and two occurrences
of misspelled  'reserved' struct member, which where not used and
cargo build did not complain about the change, soo ...

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

src/tape/file_formats/blocked_reader.rs

@@ -77,7 +77,7 @@ impl <R: Read> BlockedReader<R> {
 
         if seq_nr != buffer.seq_nr() {
             proxmox::io_bail!(
-                "detected tape block with wrong seqence number ({} != {})",
+                "detected tape block with wrong sequence number ({} != {})",
                 seq_nr, buffer.seq_nr())
         }
 

src/tape/file_formats/chunk_archive.rs

@@ -25,7 +25,7 @@ use crate::tape::{
 ///
 /// A chunk archive consists of a `MediaContentHeader` followed by a
 /// list of chunks entries. Each chunk entry consists of a
-/// `ChunkArchiveEntryHeader` folowed by the chunk data (`DataBlob`).
+/// `ChunkArchiveEntryHeader` followed by the chunk data (`DataBlob`).
 ///
 /// `| MediaContentHeader | ( ChunkArchiveEntryHeader | DataBlob )* |`
 pub struct ChunkArchiveWriter<'a> {
@@ -153,7 +153,7 @@ impl <R: Read> ChunkArchiveDecoder<R> {
         Self { reader }
     }
 
-    /// Allow access to the underyling reader
+    /// Allow access to the underlying reader
     pub fn reader(&self) -> &R {
         &self.reader
     }

src/tape/file_formats/snapshot_archive.rs

@@ -21,7 +21,7 @@ use crate::tape::{
 ///
 /// This ignores file attributes like ACLs and xattrs.
 ///
-/// Returns `Ok(Some(content_uuid))` on succees, and `Ok(None)` if
+/// Returns `Ok(Some(content_uuid))` on success, and `Ok(None)` if
 /// `LEOM` was detected before all data was written. The stream is
 /// marked inclomplete in that case and does not contain all data (The
 /// backup task must rewrite the whole file on the next media).