[fix] again change name to basics exercise in runtime readme

exercises/exercise-runtimeparams/README.md

@@ -2,7 +2,7 @@
 <br>
 ## Problem set-up
 
-Here we will expand on what we've covered in the mainfile exercise, and the problem set up will remain the same.
+Here we will expand on what we've covered in the basics exercise, and the problem set up will remain the same.
 
 ## Preparing the exercise
 
@@ -114,7 +114,7 @@ values[Indices::conti0EqIdx + FluidSystem::N2Idx]= -1e-4/FluidSystem::molarMass(
 with a runtime variable.
 
 * (2a) Develop a new variable called `totalAreaSpecificInflow_`,
-* (2b) record a value to this variable from a path in the input file, and 
+* (2b) record a value to this variable from a path in the input file, and
 * (2c) incorporate this variable into the injection boundary condition.
 
 When your problem file and the input file are edited, compile and run the exercise.