Merge pull request #551 from jitenkmicrosoft/patch-1

Added ' in the end

Author: ktoliver

docs/advanced-analytics/r/determine-which-packages-are-installed-on-sql-server.md

@@ -110,7 +110,7 @@ import pkg_resources
 pckg_name = "revoscalepy"
 pckgs = pandas.DataFrame([(i.key) for i in pip.get_installed_distributions()], columns = ["key"])
 installed_pckg = pckgs.query(''key == @pckg_name'')
-print("Package", pckg_name, "is", "not" if installed_pckg.empty else "", "installed")
+print("Package", pckg_name, "is", "not" if installed_pckg.empty else "", "installed")'
 ```
 
 ## View installed packages using a utility or IDE