Fix spelling mistake "mulitple" to "multiple"

Author: AdrianP873

doc_source/sample-buildspec-artifact-naming.md

@@ -2,7 +2,7 @@
 
  This sample contains example buildspec files that demonstrate how to specify an artifact name that is created at build time\. A name specified in a buildspec file can incorporate Shell commands and environment variables to make it unique\. A name you specify in a buildspec file overrides a name you enter in the console when you create your project\.
 
- If you build mulitple times, using an artifact name specified in the buildspec file can ensure your output artifact file names are unique\. For example, you can use a date and timestamp that is inserted into an artifact name at build time\. 
+ If you build multiple times, using an artifact name specified in the buildspec file can ensure your output artifact file names are unique\. For example, you can use a date and timestamp that is inserted into an artifact name at build time\. 
 
 If you want to override the artifact name you entered in the console with a name in the buildspec file, do the following:
 
@@ -79,4 +79,4 @@ artifacts:
   name: $Env:TEST_ENV_VARIABLE-$Env:AWS_REGION
 ```
 
- For more information, see [Build specification reference for CodeBuild](build-spec-ref.md)\. 
+ For more information, see [Build specification reference for CodeBuild](build-spec-ref.md)\.