Fix typo in variable name

Author: StuartWheater

opal_azure-pipelines.yml

@@ -233,7 +233,7 @@ jobs:
     # Install dsBase.
     # If previous steps have failed then don't run.
   - bash: |
-      R -q -e "library(opalr); opal <- opal.login(username = 'administrator', password = 'datashield_test&', url = 'https://localhost:8443', opts = list(ssl_verifyhost=0, ssl_verifypeer=0)); opal.put(opal, 'system', 'conf', 'general', '_rPackage'); opal.logout(o)"
+      R -q -e "library(opalr); opal <- opal.login(username = 'administrator', password = 'datashield_test&', url = 'https://localhost:8443', opts = list(ssl_verifyhost=0, ssl_verifypeer=0)); opal.put(opal, 'system', 'conf', 'general', '_rPackage'); opal.logout(opal)"
 
       R -q -e "library(opalr); opal <- opal.login('administrator','datashield_test&', url='https://localhost:8443/', opts = list(ssl_verifyhost=0, ssl_verifypeer=0)); dsadmin.install_github_package(opal, 'dsBase', username = 'datashield', ref = 'v6.3.5-dev'); opal.logout(opal)"