Update Makefile

Author: GuruPKK

Makefile

@@ -11,7 +11,7 @@ DOTCOM_STAGING_BUCKET=docs-mongodb-org-dotcomstg
 DOTCOM_PRODUCTION_URL="https://mongodb.com"
 DOTCOM_PRODUCTION_BUCKET=docs-mongodb-org-dotcomprd
 DOTCOM_PREFIX=docs-qa/php-library
-DOTCOM_STGPREFIX=docs/php-library
+DOTCOM_STGPREFIX=docs-qa/php-library
 
 # Parse our published-branches configuration file to get the name of
 # the current "stable" branch. This is weird and dumb, yes.