add mermaid live editor link

docusaurus.config.ts

@@ -158,6 +158,10 @@ const config: Config = {
               label: '🦖 Docusaurus guide',
               to: 'https://docusaurus.io/docs/category/guides',
             },
+            {
+              label: 'Mermaid live editor',
+              to: 'https://mermaid.live/edit#pako:eNp9UkFu2zAQ_MqCgKEUsII6hx50buIUSE4petJlTa6lbSlSICnXrqFX9NZLv9gnlJQUR1WKHASIszszu4s5C2kViUKsVmc2HAo4QxZqaigrINuhp2w9AV_QMe40-WxswuoBd6TvrAlP_GPo33xojxn00PerVWnyPC9N4KCpgC2HvbbfYW8d3EqrT3aqVxy2Dtu6NNI2DQdgVUApHGmK5rC53ly_LwVEtwQfpndpdg6NrEHRITJrkt9sF6bXXKd1dGDbeRhRP6PuCUMurfF2wUmFq6HwrgBUKnFbdAQKA6ZZTm3c6P7T9v4hfp_f9B-00KA-efZRztuGQs2mSoNcePNRGnIV_Ufp8RkHNsHOKWI5wSgxF31Zmo-XnS_uM2xwXO7Ax8s5ujYegeJFtHX-tfM_vD-_f_4CZSXk0Dr7lWRq8tJxG9iaRJ4GXfq_ysDNIgM3YwZm7g2ymd1OrEX8j6CK0T6XBiJvCHEpkoSiPXY6JI0-tmIX7NPJSFEE19FajEt-ZKwcNiPY_wUrVh19',
+            },
             {
               label: 'Contact us',
               href: 'mailto:snudev@grandlyon.com',