fix make file (#868)

Author: Remi-Gau

Makefile

@@ -53,7 +53,7 @@ clean_test:	## Remove all the output of the tests
 	rm *.log
 	rm -rf coverage_html
 
-update: update.sh ## Tries to get the latest version of the current branch from upstream
+update: ## Tries to get the latest version of the current branch from upstream
 	bash tools/update.sh
 
 fix_submodule: ## Fix any submodules that would not be checked out