fix(docs): update aria-label and title attributes for the button on the Guidelines page (#2703)

Co-authored-by: Hannah Issermann <[email protected]>
Co-authored-by: Julien Déramond <[email protected]>

Author: 3 people

site/layouts/_default/single.html

@@ -25,7 +25,7 @@ <h1 class="display-1">{{ .Title | markdownify }}</h1>
             </div>
             {{ else if eq .Title "Orange Design System for web" -}}
             <div class="d-flex flex-column flex-sm-row">
-              <a href="{{ .Site.Params.ods.web }}" class="btn btn-primary" aria-label="Design system for web" title="Design system for web" target="_blank" rel="noopener">Visit system.design.orange.com</a>
+              <a href="{{ .Site.Params.ods.web }}" class="btn btn-primary" aria-label="Visit Orange Design System for web at system.design.orange.com" title="Visit Orange Design System for web at system.design.orange.com" target="_blank" rel="noopener">Visit system.design.orange.com</a>
             </div>
             {{- end }}
           </div>