docs: reformat github_ip_ranges for clarity (#928)

At the moment, the way these bullet points are structured leads me to believe that the `*_ipv4` and `*_ipv6` values are nested in the top-level values. Remove the indent for clarity.

Author: ghmeier

website/docs/d/ip_ranges.html.markdown

@@ -18,20 +18,20 @@ data "github_ip_ranges" "test" {}
 ## Attributes Reference
 
  * `actions` - An array of IP addresses in CIDR format specifying the addresses that incoming requests from GitHub actions will originate from.
-   * `actions_ipv4` - A subset of the `actions` array that contains IP addresses in IPv4 CIDR format.
-   * `actions_ipv6` - A subset of the `actions` array that contains IP addresses in IPv6 CIDR format.
+ * `actions_ipv4` - A subset of the `actions` array that contains IP addresses in IPv4 CIDR format.
+ * `actions_ipv6` - A subset of the `actions` array that contains IP addresses in IPv6 CIDR format.
  * `dependabot` - An array of IP addresses in CIDR format specifying the A records for dependabot.
-   * `dependabot_ipv4` - A subset of the `dependabot` array that contains IP addresses in IPv4 CIDR format.
-   * `dependabot_ipv6` - A subset of the `dependabot` array that contains IP addresses in IPv6 CIDR format.
+ * `dependabot_ipv4` - A subset of the `dependabot` array that contains IP addresses in IPv4 CIDR format.
+ * `dependabot_ipv6` - A subset of the `dependabot` array that contains IP addresses in IPv6 CIDR format.
  * `hooks` - An Array of IP addresses in CIDR format specifying the addresses that incoming service hooks will originate from.
-   * `hooks_ipv4` - A subset of the `hooks` array that contains IP addresses in IPv4 CIDR format.
-   * `hooks_ipv6` - A subset of the `hooks` array that contains IP addresses in IPv6 CIDR format.
+ * `hooks_ipv4` - A subset of the `hooks` array that contains IP addresses in IPv4 CIDR format.
+ * `hooks_ipv6` - A subset of the `hooks` array that contains IP addresses in IPv6 CIDR format.
  * `git` - An Array of IP addresses in CIDR format specifying the Git servers.
-   * `git_ipv4` - A subset of the `git` array that contains IP addresses in IPv4 CIDR format.
-   * `git_ipv6` - A subset of the `git` array that contains IP addresses in IPv6 CIDR format.
+ * `git_ipv4` - A subset of the `git` array that contains IP addresses in IPv4 CIDR format.
+ * `git_ipv6` - A subset of the `git` array that contains IP addresses in IPv6 CIDR format.
  * `pages` - An Array of IP addresses in CIDR format specifying the A records for GitHub Pages.
-   * `pages_ipv4` - A subset of the `pages` array that contains IP addresses in IPv4 CIDR format.
-   * `pages_ipv6` - A subset of the `pages` array that contains IP addresses in IPv6 CIDR format.
+ * `pages_ipv4` - A subset of the `pages` array that contains IP addresses in IPv4 CIDR format.
+ * `pages_ipv6` - A subset of the `pages` array that contains IP addresses in IPv6 CIDR format.
  * `importer` - An Array of IP addresses in CIDR format specifying the A records for GitHub Importer.
-   * `importer_ipv4` - A subset of the `importer` array that contains IP addresses in IPv4 CIDR format.
-   * `importer_ipv6` - A subset of the `importer` array that contains IP addresses in IPv6 CIDR format.
+ * `importer_ipv4` - A subset of the `importer` array that contains IP addresses in IPv4 CIDR format.
+ * `importer_ipv6` - A subset of the `importer` array that contains IP addresses in IPv6 CIDR format.