Update help_gurobi.txt

ded9636f · katharina.loeffler · 328f2df7 · ded9636f
Commit ded9636f authored Apr 29, 2021 by katharina.loeffler
--- a/help_gurobi.txt
+++ b/help_gurobi.txt
@@ -14,7 +14,7 @@ mv /../Downloads/gurobi9.1.1_linux64.tar.gz /LOCAL_DIR
 tar xvfz gurobi9.1.1_linux64.tar.gz

 5) add gurobi to path
-export=$PATH:/LOCAL_DIR/gurobi911/linux/bin
+export PATH=$PATH:/LOCAL_DIR/gurobi911/linux/bin

 6) get gurobi license key https://www.gurobi.com/downloads/end-user-license-agreement-academic/