minor text edits to compare-interventions.Rmd

Author: joshwlambert

episodes/compare-interventions.Rmd

@@ -107,7 +107,7 @@ output_baseline <- epidemics::model_default(
 
 + Complete tutorials [Simulating transmission](../episodes/simulating-transmission.md) and [Modelling interventions](../episodes/modelling-interventions.md)
 
-Learners should familiarise themselves with following concept dependencies before working through this tutorial: 
+Learners should familiarise themselves with the following concept dependencies before working through this tutorial: 
 
 **Outbreak response**: [Intervention types](https://www.cdc.gov/nonpharmaceutical-interventions/).
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