setVMMaxMapCount is false by default

[jpmat296]

opensearch-k8s-operator/charts/opensearch-cluster/README.md

Line 62 in e5103bf

| cluster.general.setVMMaxMapCount | bool | `true` | Enable setVMMaxMapCount. OpenSearch requires the Linux kernel vm.max_map_count option to be set to at least 262144 |

According to my test, setVMMaxMapCount is false by default. Documentation should be corrected.

[krisfreedain]

@jpmat296 - this is great - do you have a moment to submit a doc change PR to the 'documentation-website' repo?

Catch All Triage - 1 2

[jpmat296]

There is already a pull request for this issue : #1084