Remove space between classes in admonition

Author: rowanc1

.prettierignore

@@ -0,0 +1 @@
+tests/fixtures/*.md

src/directives/admonitions.ts

@@ -24,7 +24,8 @@ class BaseAdmonition extends Directive {
     // we create an overall container, then individual containers for the title and body
 
     const adToken = this.createToken("admonition_open", "aside", 1, { map: data.map })
-    adToken.attrSet("class", `admonition ${this.title.toLowerCase()}`)
+    adToken.attrSet("class", "admonition")
+    if (this.title) adToken.attrJoin("class", this.title.toLowerCase())
     if (data.options.class) {
       adToken.attrJoin("class", data.options.class.join(" "))
     }

tests/fixtures/directives.md

@@ -16,7 +16,7 @@ admonition
 Some *content*
 ```
 .
-<aside class="admonition "><p class="admonition-title">A <strong>Title</strong></p><div class="admonition-body"><p>Some <em>content</em></p>
+<aside class="admonition"><p class="admonition-title">A <strong>Title</strong></p><div class="admonition-body"><p>Some <em>content</em></p>
 </div></aside>
 .