Fix heading levels

Signed-off-by: Ian Maddaus <ian.maddaus@progress.com>

Author: IanMadd

content/license/_index.md

@@ -107,7 +107,7 @@ When you first run Chef Infra Client 19, you must accept the End User License Ag
 
 Chef Infra Client accepts a license using a command line option, environment variable, or config file.
 
-#### Options
+### Options
 
 Chef Infra Client accepts the following license acceptance options:
 
@@ -120,15 +120,15 @@ Chef Infra Client accepts the following license acceptance options:
 `accept-no-persist`
 : Similar to `accept-silent`, but no marker file is persisted. Future invocation will require accepting the license again.
 
-#### Command line option
+### Command line option
 
 Accept the Chef License with a command line invocation.
 
 ```sh
 chef-client --chef-license <LICENSE_OPTION>
 ```
 
-#### Environment variable
+### Environment variable
 
 Accept the Chef License by setting an environment variable. For example:
 
@@ -137,7 +137,7 @@ export CHEF_LICENSE="<LICENSE_OPTION>"
 chef-client OPTION VALUE
 ```
 
-#### Config file
+### Config file
 
 You can accept the Chef License with the Chef Infra Client or Knife config files.