Minor spelling change

src/tutorials/graphBuilding.ts

@@ -116,7 +116,7 @@ newTut.newTutStep("Connecting nodes", "<em>Click and hold the output Port of the
 .setAlternateHighlightTargetFunc(function(){return $("#logicalGraphParent")})
 .setConditionFunction(function(eagle:Eagle){if(eagle.logicalGraph().getEdges().length != 0){return true}else{return false}}) //check if there are any edges present in the graph
 
-newTut.newTutStep("Graph Errors and warnings", "This is the error checking system, it is showing a checkmark, so we did everything correctly. If there are errors in the graph you are able to troubleshoot them by clicking here.", function(){return $("#checkGraphDone")})
+newTut.newTutStep("Graph Errors and warnings", "This is the error checking system, it is showing a check mark, so we did everything correctly. If there are errors in the graph you are able to troubleshoot them by clicking here.", function(){return $("#checkGraphDone")})
 
 // newTut.newTutStep("Graph Errors and warnings", "This modal may aid you in troubleshooting graphs. In this case these errors are all port type errors. Eagle can automatically fix errors such as these for you. To do this you can press 'F' in the graph or <em>click on 'Fix All'</em>", function(){return $("#errorModalFixAll")})
 // .setType(TutorialStep.Type.Press)