Fix typo

Change-Id: Iad79c0a4db5a2dd367ad73410075b102efe3f3b3
Reviewed-on: https://gerrit.libreoffice.org/56306
Tested-by: Jenkins
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

sc/source/core/tool/token.cxx

@@ -1356,7 +1356,7 @@ void ScTokenArray::CheckForThreading( const FormulaToken& r )
             case svExternalDoubleRef:
             case svExternalSingleRef:
                 SAL_INFO("sc.core.formulagroup", "opcode ocPush: variable type " << StackVarEnumToString(r.GetType())
-                    << " disables threaded calculcation of formula group");
+                    << " disables threaded calculation of formula group");
                 mbThreadingEnabled = false;
                 return;
             default: