Update data_sources_to_add.txt

data_sources_to_add.txt

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+- Germany: https://www.rki.de/DE/Content/InfAZ/N/Neuartiges_Coronavirus/Daten/Fallzahlen_Kum_Tab.html;jsessionid=74FF675B85ECD0DC0A7EF7DCBC87A60F.internet052?nn=13490888
+- UK: https://github.com/publichealthengland/coronavirus-dashboard 
+- France: https://dashboard.santepubliquefrance.fr/digdash_dashboard_spf/
+- Nigeria: https://ncdc.gov.ng/diseases/sitreps/?cat=14&name=An%20update%20of%20COVID-19%20outbreak%20in%20Nigeria, http://covid19.ncdc.gov.ng/state/ 
+- Mozambique: https://data.humdata.org/dataset/mozambique-coronavirus-covid-19-subnational-cases 
+- Burkina Faso: https://data.humdata.org/dataset/burkinafaso_covid19_subnational 
+- Palestine: https://data.humdata.org/dataset/state-of-palestine-coronavirus-covid-19-subnational-cases
+- Afghanistan: https://data.humdata.org/dataset/afghanistan-covid-19-statistics-per-province
+- Venezuela: https://data.humdata.org/dataset/corona-virus-covid-19-cases-and-deaths-in-venezuela
+- Myanmar: https://data.humdata.org/dataset/myanmar-coronavirus-covid-19-subnational-cases
+- Kazakhstan: https://data.humdata.org/dataset/kazakhstan-coronavirus-covid-19-subnational-cases 
+- Oman: https://data.humdata.org/dataset/oman-coronavirus-covid-19-subnational-cases 
+- Alaska: https://akvariants.github.io/ 
+- Mexico: https://datos.covid-19.conacyt.mx/
+- Belize: http://health.gov.bz/www/
+- El Salvador: https://covid19.gob.sv/
+- Honduras: https://covid19honduras.org/#