Typo in comment : writte -> written (#2801)

Author: blegat

src/Utilities/mockoptimizer.jl

@@ -322,7 +322,7 @@ function MOI.set(
     if value == MOI.CONFLICT_FOUND && mock.conflict_count == 0
         # A backwards compatible change for JuMP, which set MOI.ConflictStatus
         # in its tests without setting MOI.ConflictCount (because the test was
-        # writte prior to the introduction of MOI.ConflictCount).
+        # written prior to the introduction of MOI.ConflictCount).
         mock.conflict_count = 1
     end
     mock.conflict_status = value