Update README.md

Author: tedsecretsource

README.md

@@ -4,7 +4,7 @@ Get DNS records in a CSV format from a file with a list of domains.
 
 `mx.sh --domains 'path/to/domain/file/with/one/domain/on/each/line' --record 'MX'`
 
-Sources of inspiration
-https://dev.to/thiht/shell-scripts-matter
-http://redsymbol.net/articles/unofficial-bash-strict-mode/
-https://www.gnu.org/software/bash/manual/html_node/Bash-Conditional-Expressions.html
+## Sources of inspiration
+* https://dev.to/thiht/shell-scripts-matter
+* http://redsymbol.net/articles/unofficial-bash-strict-mode/
+* https://www.gnu.org/software/bash/manual/html_node/Bash-Conditional-Expressions.html