Typo fix for Readme

steps -> specs
This typo resulted in a 404

Author: karensawrey

Readme.md

@@ -10,7 +10,7 @@ When a build is start it runs a single job first. This job executes `.buildkite/
 
 This [.buildkite/pipeline.sh](.buildkite/pipeline.sh) script does the following:
 
-* Creates a separate test step for each directory in [steps](steps/)
+* Creates a separate test step for each directory in [specs](specs/)
 * Adds a deploy step at the end only if the build is on the master branch
 
 For a non-master branch build it generates: