Add french language translation, links between translated texts of report (#156)

* Fix typo noticed by Robert Linder

* Update links per comments by J O Connor

* Update Gemfile.lock

Fix vulnerability notification

* Update rexml version

* Delete demos directory

* Add french language translation of workshop report, add links between

Author: prushforth

Diff for: Gemfile.lock

@@ -251,6 +251,7 @@ GEM
     unf_ext (0.0.7.7)
     unf_ext (0.0.7.7-x64-mingw32)
     unicode-display_width (1.7.0)
+    wdm (0.1.1)
 
 PLATFORMS
   ruby
@@ -260,6 +261,7 @@ DEPENDENCIES
   github-pages
   jekyll-feed (~> 0.6)
   tzinfo-data
+  wdm (~> 0.1.0)
 
 BUNDLED WITH
-   2.1.4
+   2.2.11

Diff for: report-fr.md

@@ -7,7 +7,7 @@ description: >-
 
 {% include relBase.html %}
 
-以下报告内容的[原始英文版本在这里](https://www.w3.org/2020/maps/report)。
+以下报告内容的[原始英文版本在这里]({{ relBase }}/report)。 [法语翻译在这里]({{ relBase }}/report-fr)。
 
 <h2 id="executive-summary">执行摘要</h2>