feat(curl): Making page on curl request with host header (#671)

Author: userbradley

docs/kb/curl/curl-request-with-host.md

@@ -0,0 +1,15 @@
+---
+title: Curl request with Host Header
+---
+
+## Why
+
+Sometimes when you're testing NGINX or a WAF, you won't have a DNS record set up for it yet, so can't get to the virtual host.
+
+## How
+
+Below is an example making a curl request to an IP address with the Host being `not.relevant-land.fyi`
+
+```shell
+curl --header 'Host: not.relevant-land.fyi' http://172.16.0.1
+```

mkdocs.yml

@@ -13,6 +13,8 @@ nav:
           - Cloudflared on Ubuntu for ssh: kb/cloudflared/cloudflared-on-ubuntu-for-ssh.md
       - Copybara:
           - Installing Copybara: kb/copybara/installing-copybara.md
+      - Curl:
+          - Curl request with Host Header: kb/curl/curl-request-with-host.md
       - Dependabot:
           - Ignore terraform module version dependabot: kb/dependabot/ignore-terraform-module-version-dependabot.md
       - Disk management: