Merge branch 'readme-ecss-fix' into 'master'

Fix name of ECSS standard

See merge request acubesat/obc/ecss-services!64

README.md

-# ECSS-E-ST-40-71C Services
+# ECSS-E-ST-70-41C Services
 
 In this repository you can find the implementation of the ECSS services, based
-on the [ECSS-E-ST-40-71C](https://ecss.nl/standard/ecss-e-st-70-41c-space-engineering-telemetry-and-telecommand-packet-utilization-15-april-2016/)
+on the [ECSS-E-ST-70-41C](https://ecss.nl/standard/ecss-e-st-70-41c-space-engineering-telemetry-and-telecommand-packet-utilization-15-april-2016/)
 standard.
 
 ## Directories
@@ -12,4 +12,4 @@ standard.
 - **test**: Unit test implementation
 
 ## Documentation
-Full documentation about this project based on code comments is available at https://acubesat.gitlab.io/obc/ecss-services/docs/.
\ No newline at end of file
+Full documentation about this project based on code comments is available at https://acubesat.gitlab.io/obc/ecss-services/docs/.