Merge ~elmo/charm-elasticsearch:juju-config-not-set into charm-elasticsearch:master

[James Troup]

Replace references to 'juju set' with 'juju config'.

[🤖 Canonical IS Merge Bot (canonical-is-mergebot)]

This merge proposal is being monitored by mergebot. Change the status to Approved to merge.

[🤖 prod-jenkaas-bootstack (prod-jenkaas-bootstack)]

A CI job is currently in progress. A follow up comment will be added when it completes.

[🤖 prod-jenkaas-bootstack (prod-jenkaas-bootstack)]

FAILED: Continuous integration, rev:f04685cf714dc99e42d08c78ce6358848658acd2
https://jenkins.canonical.com/bootstack/job/lp-charm-elasticsearch-ci/6/
Executed test runs:
    FAILURE: https://jenkins.canonical.com/bootstack/job/lp-charm-test-functest/32/
    None: https://jenkins.canonical.com/bootstack/job/lp-update-mp/397/

Click here to trigger a rebuild:
https://jenkins.canonical.com/bootstack/job/lp-charm-elasticsearch-ci/6//rebuild

review: Needs Fixing (continuous-integration)

[Celia Wang (ziyiwang)]

The CI failure is not caused by this MR.
+1 to merge this one.

review: Approve

[🤖 Canonical IS Merge Bot (canonical-is-mergebot)]

Change successfully merged at revision 8ce484a87bdc85622d1d65c1271fe5d367cfc588

diff --git a/README.md b/README.md
index 5dee831..f90f394 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ the instance itself and any clients that join. Similarly the node-to-node
 communication port (9300) is only available to other units in the elasticsearch
 service. You can change this explicitly with:
 
-    juju set elasticsearch firewall_enabled=false
+    juju config elasticsearch firewall_enabled=false
 
 See the separate HACKING.md for information about deploying this charm
 from a local repository.