Fix missing ENVIRONMENT -> BITOPS_ENVIRONMENT var changes in the docs

[arm4b]

In v2.0.0 the use of $ENVIRONMENT var was deprecated in favor of $BITOPS_ENVIRONMENT.
The documentation is still having the old variable references.

This PR fixes it.

---

@mickmcgrath13 @ccapell @PhillypHenning Another question is what to do with the example projects under the docs https://github.com/bitovi/bitops/tree/main/docs/examples as they might be relying on v1.0 env variables and configuration.
Do we want to rename those too or more verifications on compatibility with v2 needed?

[mickmcgrath13]

@armab

Another question is what to do with the example projects under the docs https://github.com/bitovi/bitops/tree/main/docs/examples as they might be relying on v1.0 env variables and configuration.
Do we want to rename those too or more verifications on compatibility with v2 needed?

I see 3 options:

1. Update the examples to be v2 compatible
2. rename the examples to be prefixed with v1 (this is blog implications as many blogs link to many of the dirs)
3. Update BitOps V2 to be backwards compatible with V1 (i.e. deprecate $ENVIRONMENT rather than straight remove it)

I think i'm in favor of 3. It should be a simple:

if [ -z "$BITOPS_ENVIRONMENT" ]; then
  if [ -n "$ENVIRONMENT" ]; then
    echo "ENVIRONMENT deprecated. Use BITOPS_ENVIRONMENT instead."
    export BITOPS_ENVIRONEMT="$ENVIRONMENT"
  else
    echo "BITOPS_ENVIORNMENT required"
    exit 1
  fi
fi

[ccapell]

@mickmcgrath13 The examples are updated in #272

[mickmcgrath13]

@ccapell there are other examples that @armab is referring to here:
https://github.com/bitovi/bitops/tree/main/docs/examples

These examples were primarily (if not entirely) created for V1 and might need updating as well. I think the deprecation approach is a good one, and we can upgrade them to all be v2 compatible in time