Update azure-pipelines.yml

Author: cristianoc

azure-pipelines.yml

@@ -146,7 +146,7 @@ jobs:
           find ~/.esy -name "x86_64-w64-mingw32-as*"
           echo "print_int 42;; print_newline();;" >testOcaml.ml
           echo "build with esy"
-          esy b x ocamlopt.opt -verbose testOcaml.ml -o testOcaml
+          esy b ocamlopt.opt -verbose testOcaml.ml -o testOcaml
           # echo "build without esy"
           # ocamlopt.opt testOcaml.ml -o testOcaml
           ./testOcaml