fix: remove whitespace between title spans to fix mobile display

HTML newlines between inline <span> elements render as a space character
in the browser, causing "docs .internetcomputer.org" with a spurious gap.

Author: marc0olo

src/components/SiteTitle.astro

@@ -27,10 +27,7 @@ const { siteTitleHref } = Astro.locals.starlightRoute;
       </>
     )
   }
-  <span class="title-group" translate="no">
-    <span class="title-docs">docs</span>
-    <span class="title-domain">.internetcomputer.org</span>
-  </span>
+  <span class="title-group" translate="no"><span class="title-docs">docs</span><span class="title-domain">.internetcomputer.org</span></span>
 </a>
 
 <style>