docs: correct copied parameter descriptions

Several parameter descriptions were carried over from unrelated variables and
described the wrong attribute. Both country name parameters claimed to document
a Common Name, the client organizational unit name repeated the Common Name text
and the two client content parameters described a passphrase and a key
algorithm.

The client content parameters now follow the wording already used for their root
and intermediate counterparts. The README tables were regenerated with
readme-generator, which also normalises the column padding of the previously
hand-edited rows.

Additionally fix the misspelled repository owner in the homepage URL and a typo
in the galaxy description.

Co-authored-by: Copilot <copilot@github.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "certificate-authority-ansible-role",
-  "homepage": "https://git.cryptic.systems/volker.raschel/certificate-authority-ansible-role.git",
+  "homepage": "https://git.cryptic.systems/volker.raschek/certificate-authority-ansible-role.git",
   "license": "MIT",
   "private": true,
   "engineStrict": true,