[FEATURE] Apply changes as discussed in review (- WIP PR #426 -)

Changes in file README.md:
 * added missing comma

Changes in file docs/conf.py:
 * "selectively" fixed a typo
 * Preserved the existing tab indentation as required by [CEP-8](https://gist.github.com/reactive-firewall/b7ee98df9e636a51806e62ef9c4ab161) for consistancy

Changes in file tests/check_spelling:
 * updated regressions list

Author: reactive-firewall

README.md

@@ -148,7 +148,7 @@ print('Received:', message)
 
 ### Listening for Multicast Messages
 
-* Depending on what needs to be done with received data each case will be a bit different.
+* Depending on what needs to be done with received data, each case will be a bit different.
 
 ```python3
 # setup console logging as example

docs/conf.py

@@ -294,7 +294,7 @@
 # Output file base name for HTML help builder.
 htmlhelp_basename = "multicast_doc"
 
-# -- Options for MyST markdown parser -------------------------------------------
+# -- Options for Mermaid diagrams -----------------------------------------------
 # see https://github.com/mgaitan/sphinxcontrib-mermaid?tab=readme-ov-file#markdown-support
 
 # GFM style mermaid use zoom
@@ -456,7 +456,7 @@
 
 def linkcode_resolve(domain, info):
 	"""
-	Resolves selectivly linking to GitHub source-code for the multicast module.
+	Resolves selectively linking to GitHub source-code for the multicast module.
 
 	See https://www.sphinx-doc.org/en/master/usage/extensions/linkcode.html for more details.
 

tests/check_spelling

@@ -158,6 +158,7 @@ declare -a SPECIFIC_TYPOS=(
 	"excutable:executable"  # from #130
 	"bassed:based"  # from #415
 	"Historicly:Historically"  # from #415
+	"selectivly:selectively"  # from #426
 )
 
 function cleanup() {