ci: fix mdl configuration

This commit makes the following changes:
`Please replace \":code_blocks => false\" \`
`by \":ignore_code_blocks => true\" in your configuration.`
Some rules are ignore for the time being,
these will be fixed later on.

Signed-off-by: Rakshith R <rar@redhat.com>

scripts/mdl-style.rb

@@ -3,8 +3,13 @@
 #Refer below url for more information about the markdown rules.
 #https://github.com/markdownlint/markdownlint/blob/master/docs/RULES.md
 
-rule 'MD013', :code_blocks => false, :tables => false, :line_length => 80
+rule 'MD013', :ignore_code_blocks => false, :tables => false, :line_length => 80
 
 exclude_rule 'MD033' # In-line HTML: GitHub style markdown adds HTML tags
 exclude_rule 'MD040' # Fenced code blocks should have a language specified
 exclude_rule 'MD041' # First line in file should be a top level header
+# TODO: Enable the rules after making required changes.
+exclude_rule 'MD007' # Unordered list indentation
+exclude_rule 'MD012' # Multiple consecutive blank lines
+exclude_rule 'MD013' # Line length
+exclude_rule 'MD047' # File should end with a single newline character