Minor punctuation change

Author: castrodd

articles/azure-functions/functions-bindings-warmup.md

@@ -120,7 +120,7 @@ module.exports = async function (warmupContext, context) {
 ::: zone pivot="programming-language-typescript"
 # [Model v4](#tab/nodejs-v4)
 
-The following example shows a warmup trigger [TypeScript function](functions-reference-node.md) that runs on each new instance when added to your app.
+The following example shows a warmup trigger [TypeScript function](functions-reference-node.md) that runs on each new instance when added to your app:
 
 :::code language="typescript" source="~/azure-functions-nodejs-v4/ts/src/functions/warmupTrigger1.ts" :::