Add missing information to manpages

Also:
- Updated description of command 'mblookup'
- Misc text changes

Signed-off-by: JoeLametta <JoeLametta@users.noreply.github.com>

man/whipper-cd-rip.rst

@@ -7,7 +7,7 @@ Rips a CD
 ---------
 
 :Author: Louis-Philippe Véronneau
-:Date: 2020
+:Date: 2021
 :Manual section: 1
 
 Synopsis
@@ -61,6 +61,14 @@ Options
 | **--cdr**
 |     whether to continue ripping if the disc is a CD-R
 
+| **-C** | **--cover-art** *file embed complete*
+|     Fetch cover art and save it as standalone file, embed into FLAC files or
+|     perform both actions: file, embed, complete option values respectively
+
+| **-r** | **--max-retries** *<RETRIES>*
+|     Number of rip attempts before giving up if can't rip a track. This
+|     defaults to 5; 0 means infinity.
+
 Template schemes
 ================
 

man/whipper-mblookup.rst

@@ -2,24 +2,24 @@
 whipper-mblookup
 ================
 
-----------------------------------------------------
-Look up a MusicBrainz disc id and output information
-----------------------------------------------------
+-------------------------------------------------------------------------
+Look up either a MusicBrainz Disc ID or Release ID and output information
+-------------------------------------------------------------------------
 
 :Author: Louis-Philippe Véronneau
-:Date: 2020
+:Date: 2021
 :Manual section: 1
 
 Synopsis
 ========
 
-| whipper mblookup *<MB_DISC_ID>*
+| whipper mblookup *<MB_ID>*
 | whipper mblookup **-h**
 
 Arguments
 =========
 
-| *<MB_DISC_ID>*  MusicBrainz disc id to look up
+| *<MB_ID>*  MusicBrainz Disc ID or Release ID to look up
 
 Options
 =======
@@ -30,7 +30,7 @@ Options
 Examples
 ========
 
-You can lookup a MusicBrainz disc id and output its information this way::
+You can lookup a MusicBrainz Disc ID and output its information this way::
 
     whipper mblookup KnpGsLhvH.lPrNc1PBL21lb9Bg4-