Fix poor alignment of organization description on organization home page (#22656)

Don't generate nested `<p>`, use `<div>` like description on the user
profile page.

Co-authored-by: Jason Song <i@wolfogre.com>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

templates/org/home.tmpl

@@ -13,7 +13,7 @@
 					{{if .Org.Visibility.IsPrivate}}<div class="ui large basic horizontal label">{{.locale.Tr "org.settings.visibility.private_shortname"}}</div>{{end}}
 				</span>
 			</div>
-			{{if $.RenderedDescription}}<p class="render-content markup">{{$.RenderedDescription|Str2html}}</p>{{end}}
+			{{if $.RenderedDescription}}<div class="render-content markup">{{$.RenderedDescription|Str2html}}</div>{{end}}
 			<div class="text grey meta">
 				{{if .Org.Location}}<div class="item">{{svg "octicon-location"}} <span>{{.Org.Location}}</span></div>{{end}}
 				{{if .Org.Website}}<div class="item">{{svg "octicon-link"}} <a target="_blank" rel="noopener noreferrer me" href="{{.Org.Website}}">{{.Org.Website}}</a></div>{{end}}