Add link to gitter

Author: Francois

LIneA2020/index.html

@@ -1685,8 +1685,6 @@ <h1> Conclusion </h1>
 
 								      						<section>
 								      							<h3 class="slide-title"> Conclusion </h3>
-																								<br>
-																								<br>
 								      													<div class="block ">
 								      														<div class="block-title">
 								                                    What can be gained by merging Deep Learning and Physical Models?
@@ -1714,21 +1712,15 @@ <h3 class="slide-title"> Conclusion </h3>
 								      													</div>
 								      												</div>
 								      													<br>
-								      										<!-- <div class="fragment">
+								      										 <div class="fragment">
 								      												<u>Advertisement:</u>
 								                              <br>
 								      												<br>
 								      													<ul>
-								      														<li> <a href="https://github.com/ml4astro/galaxy2galaxy">Galaxy2Galaxy (github.com/ml4astro/galaxy2galaxy)</a>: Repository of models and datasets for accelerating research in ML for astro.
+								      														<li> <a href="https://gitter.im/DifferentiableUniverseInitiative">Differentiable Universe Initiative (gitter.im/DifferentiableUniverseInitiative)</a>: Group of people interested in making everything differentiable! join the conversation :-)
 								      														</li>
-
-								      														<br>
-
-								      														<li> <a href="https://gitter.im/ml4astro/GalaxyEmulationTaskForce">Galaxy Emulation Task Force (gitter.im/ml4astro/GalaxyEmulationTaskForce)</a>: Group of people working on applications of generative models to the study of galaxies, join the conversation :-) .
-								      														</li>
-
 								      													</ul>
-								      												</div> -->
+								      												</div>
 
 								      													<br>
 								      												<p class="fragment">Thank you ! </p>