fix syntax

Author: mjohnson541

src/ReactionMechanismSimulator.jl

@@ -10,7 +10,7 @@ if !("rmg" in packages) && !("rmgmolecule" in packages)
     else
         py_version = nothing
     end
-    if py_version === nothing || !(v"3.7" <= py_version) && py_version <= v"3.9")
+    if py_version === nothing || !(v"3.7" <= py_version && py_version <= v"3.9")
         @info "python version was not in 3.7-3.9 changing python version"
         CondaPkg.add("python"; version="3.9")
     end

src/rmstest.jl

@@ -11,7 +11,7 @@ if !("rmg" in packages) && !("rmgmolecule" in packages)
     else
         py_version = nothing
     end
-    if py_version === nothing || !(v"3.7" <= py_version) && py_version <= v"3.9")
+    if py_version === nothing || !(v"3.7" <= py_version && py_version <= v"3.9")
         @info "python version was not in 3.7-3.9 changing python version"
         CondaPkg.add("python"; version="3.9")
     end