ci(linting): Update spellcheck for markdown

Signed-off-by: Anastassios Nanos <ananos@nubificus.co.uk>

Author: ananos

.github/linters/names.txt

@@ -0,0 +1,14 @@
+ananos
+Anastassios
+Nanos
+Mavrikos
+Panos
+Dimitris
+Konstantinos
+Ntoutsos
+Charalampos
+Mainas
+Alexandros
+Ilias
+Lagomatis
+Patras

.github/linters/spellcheck.yml

@@ -0,0 +1,23 @@
+matrix:
+- name: Markdown
+  aspell:
+    lang: en
+    ignore-case: true
+  dictionary:
+    wordlists:
+    - .github/linters/wordlist.txt
+    - .github/linters/names.txt
+    encoding: utf-8
+  pipeline:
+  - pyspelling.filters.markdown:
+      markdown_extensions:
+      - pymdownx.superfences
+  - pyspelling.filters.html:
+      comments: false
+      ignores:
+      - code
+      - pre
+  - pyspelling.filters.url:
+  sources:
+  - '**/*.md'
+  default_encoding: utf-8