layouts: remove trailing newlines in markup overrides

These add nbsp characters that look weird in pages

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

layouts/_default/_markup/render-image.html

@@ -1,4 +1,4 @@
 <div class="image-caption">
   <img src="{{ .Destination | safeURL }}" alt="{{ .Text }}" />
   <p>{{ .Text }}</p>
-</div>
+</div>

layouts/_default/_markup/render-link.html

@@ -1 +1 @@
-<a class="link" href="{{ .Destination | safeURL }}"{{ with .Title}} title="{{ . }}"{{ end }}{{ if strings.HasPrefix .Destination "http" }} target="_blank" rel="noreferrer"{{ end }}>{{ .Text | safeHTML }}</a>
+<a class="link" href="{{ .Destination | safeURL }}"{{ with .Title}} title="{{ . }}"{{ end }}{{ if strings.HasPrefix .Destination "http" }} target="_blank" rel="noreferrer"{{ end }}>{{ .Text | safeHTML }}</a>