Fix application.yaml file name typo in config source docs (spring-cloud#406)

dont update README.adoc as it is autogenerated

Author: SohamJ

README.adoc

@@ -1027,4 +1027,4 @@ Go to `File` -> `Settings` -> `Other settings` -> `Checkstyle`. There click on t
 - `checkstyle.suppressions.file` - default suppressions. Please point it to the Spring Cloud Build's, `spring-cloud-build-tools/src/checkstyle/checkstyle-suppressions.xml` file either in your cloned repo or via the `https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/checkstyle/checkstyle-suppressions.xml` URL.
 - `checkstyle.additional.suppressions.file` - this variable corresponds to suppressions in your local project. E.g. you're working on `spring-cloud-contract`. Then point to the `project-root/src/checkstyle/checkstyle-suppressions.xml` folder. Example for `spring-cloud-contract` would be: `/home/username/spring-cloud-contract/src/checkstyle/checkstyle-suppressions.xml`.
 
-IMPORTANT: Remember to set the `Scan Scope` to `All sources` since we apply checkstyle rules for production and test sources.
+IMPORTANT: Remember to set the `Scan Scope` to `All sources` since we apply checkstyle rules for production and test sources.

docs/src/main/asciidoc/property-source-config.adoc

@@ -1,6 +1,6 @@
 == Kubernetes PropertySource implementations
 
-The most common approach to configuring your Spring Boot application is to create an `application.properties` or `applicaiton.yaml` or
+The most common approach to configuring your Spring Boot application is to create an `application.properties` or `application.yaml` or
 an `application-profile.properties` or `application-profile.yaml` file that contains key-value pairs that provide customization values to your
 application or Spring Boot starters. You can override these properties by specifying system properties or environment
 variables.