Remove extraneous space in toc.html (adityatelange#488)

Fixes errors in lower version of Hugo

Author: lambdapioneer

layouts/partials/toc.html

@@ -68,7 +68,7 @@
                 {{- end -}}
                 {{- end }}
                 <li>
-                    <a href="#{{- $cleanedID  -}}" aria-label="{{- $header | plainify -}}">{{- $header | safeHTML -}}</a>
+                    <a href="#{{- $cleanedID -}}" aria-label="{{- $header | plainify -}}">{{- $header | safeHTML -}}</a>
                     {{- else }}
                 <li>
                     <a href="#{{- $cleanedID -}}" aria-label="{{- $header | plainify -}}">{{- $header | safeHTML -}}</a>