docs: spelling error in the images README.md (#3093)

docs: Spelling error in the images README.md

Author: conj40

Diff for: images/README.md

@@ -2,7 +2,7 @@
 
 The images inside this folder are pre-built images designed to shorten the boot time of your runners and make using ephemeral runners a faster experience.
 
-These images share the same scripting as used in the user-data mechanism in `/modules/runners/templates/`. We use a `tempaltefile` mechanism to insert the relevant script fragments into the scripts used for provisioning the images.
+These images share the same scripting as used in the user-data mechanism in `/modules/runners/templates/`. We use a `templatefile` mechanism to insert the relevant script fragments into the scripts used for provisioning the images.
 
 The examples in `linux-amzn2` and `windows-core-2019` also upload a `start-runner` script that uses the exact same startup process as used in the user-data mechanism. This means that the image created here does not need any extra scripts injected or changes to boot up and connect to GH.