🪲 [Fix]: Fix linter settings and docs (#51)

## Description

This pull request updates linter and formatting configurations to
improve the development workflow. The most significant changes involve
disabling certain validation steps in the linter environment and
adjusting Markdown linting rules.

**Linter configuration updates:**

* Disabled several validation steps in the linter environment by setting
environment variables such as `VALIDATE_BIOME_FORMAT`,
`VALIDATE_BIOME_LINT`, and others to `false` in the
`.github/PSModule.yml` file.

**Markdown linting rule adjustments:**

* Disabled the `MD024` rule (no duplicate headings) and made minor
formatting changes to the `MD026` rule in
`.github/linters/.markdown-lint.yml`.

Author: MariusStorhaug

.github/linters/.markdown-lint.yml

@@ -8,18 +8,19 @@
 ###############
 # Rules by id #
 ###############
-MD004: false                  # Unordered list style
+MD004: false # Unordered list style
 MD007:
-  indent: 2                   # Unordered list indentation
+  indent: 2 # Unordered list indentation
 MD013:
-  line_length: 808            # Line length
+  line_length: 808 # Line length
+MD024: false # no-duplicate-heading, INPUTS and OUTPUTS _can_ be the same item
 MD026:
-  punctuation: ".,;:!。，；:"  # List of not allowed
-MD029: false                  # Ordered list item prefix
-MD033: false                  # Allow inline HTML
-MD036: false                  # Emphasis used instead of a heading
+  punctuation: '.,;:!。，；:' # List of not allowed
+MD029: false # Ordered list item prefix
+MD033: false # Allow inline HTML
+MD036: false # Emphasis used instead of a heading
 
 #################
 # Rules by tags #
 #################
-blank_lines: false  # Error on blank lines
+blank_lines: false # Error on blank lines