fix paragraphs inside of <ul>'s which are too spaced apart. (#102719)

* * paragraphs inside of <ul>'s were too spaced apart.
* It looks odd because markdown converts list items to <p>s

* li > p should be even better

extensions/markdown-language-features/media/markdown.css

@@ -131,6 +131,10 @@ p {
 	margin-bottom: 1.5em;
 }
 
+li > p {
+	margin-bottom: 0;
+}
+
 /* don't space 2 paragraphs too far apart */
 p + p {
 	margin-top: -0.8em;