doc update

* fix a typo in the about page
* update the gif demo

explorer/src/vues/routes/about.vue

@@ -3,8 +3,8 @@
     <p class="about__description">
       This is home to Cosmogony, a project that aims at providing an efficient tool to quickly use and update worldwide geographical regions.
       It returns geographical zones with a structured hierarchy to easily know that :<br>
-      <a href="https://www.openstreetmap.org/relation/7444">Paris</a> is a <span class="about__emphasis">city</span> > in the
-      <span class="about__emphasis">state</span> <a href="https://www.openstreetmap.org/relation/8649">Île-de-France</a> > in the <span class="about__emphasis">country</span>
+      <a href="https://www.openstreetmap.org/relation/7444">Paris</a> is a <span class="about__emphasis">city</span> in the
+      <span class="about__emphasis">state</span> <a href="https://www.openstreetmap.org/relation/8649">Île-de-France</a> in the <span class="about__emphasis">country</span>
       <a href="https://www.openstreetmap.org/relation/2202162">France</a>.
     </p>
     <p class="about__description">The architecture of Cosmogony is based on <a href="https://www.openstreetmap.org">OpenStreetMap data</a>

readme.md

@@ -4,7 +4,7 @@ The main goal of this tool is to have some visual and geographical feedback on [
 
 :construction::warning: This is a work in progress, and deeply connected to the Cosmogony output format :construction::warning:
 
-![cosmogoni demo](./demo.gif)
+![cosmogony demo](./demo.gif)
 
 
 ## Usage