OCP 3.3: Link fixes

Author: vikram-redhat

dev_guide/downward_api.adoc

@@ -227,8 +227,8 @@ When creating pods, you can use the downward API to inject information about
 computing resource requests and limits so that image and application authors can
 correctly create an image for specific environments.
 
-You can do this using both the xref:dapi-using-environment-variables[environment
-variable] and xref:dapi-using-volume-plugin[volume plug-in] methods.
+You can do this using both the xref:dapi-resources-environment-variables[environment
+variable] and xref:dapi-values-using-volume-plugin[volume plug-in] methods.
 
 [[dapi-resources-environment-variables]]
 === Using Environment Variables