Update document generation scripts with "Chef Habitat" wording

Looks like #6667 was a bit overzealous in its grepping; it changed
some generated files, rather than making changes to the generating
code.

Additional changes to CLI documentation and template references should
take place in their source code, for consistency.

Signed-off-by: Christopher Maier <cmaier@chef.io>

www/scripts/generate-cli-docs.js

@@ -76,13 +76,13 @@ function markdownForHeader() {
   const formatted = `${now.getDate()} ${months[now.getMonth()]} ${now.getFullYear()}`
   return `<!-- This is a generated file, do not edit it directly. See https://github.com/habitat-sh/habitat/blob/master/www/scripts/generate-cli-docs.js -->
  ---
-title: Habitat Docs - hab CLI Reference
+title: Chef Habitat Docs - hab CLI Reference
 draft: false
 ---
 
-# Habitat Command-Line Interface (CLI) Reference
+# Chef Habitat Command-Line Interface (CLI) Reference
 
-The commands for the Habitat CLI (\`hab\`) are listed below.
+The commands for the Chef Habitat CLI (\`hab\`) are listed below.
 
 | Applies to Version | Last Updated |
 | ------- | ------------ |

www/scripts/generate-template-reference.js

@@ -6,7 +6,7 @@ function writeHeader() {
   lines.push(`<!-- This is a generated file, do not edit it directly. See https://github.com/habitat-sh/habitat/blob/master/www/scripts/generate-template-reference.js -->`)
   lines.push(`# Template Data`);
   lines.push('');
-  lines.push(`The following settings can be used during a Habitat service's lifecycle. This means that you can use these settings in any of the plan hooks, such as \`init\`, or \`run\`, and also in any templatized configuration file for your application or service.`)
+  lines.push(`The following settings can be used during a Chef Habitat service's lifecycle. This means that you can use these settings in any of the plan hooks, such as \`init\`, or \`run\`, and also in any templatized configuration file for your application or service.`)
   lines.push('');
   lines.push(`These configuration settings are referenced using the [Handlebars.js](https://github.com/wycats/handlebars.js/) version of [Mustache-style](https://mustache.github.io/mustache.5.html) tags.`)
   lines.push('');