docs: add strict wildcard flags in README.md

Author: Adel Assakaf

README.md

@@ -415,20 +415,19 @@ The `-sw` flag provides automatic wildcard detection and filtering without requi
 $ dnsx -l domains.txt -sw
 
 [INF] Detecting wildcard root subdomains
-[INF] Found 7 wildcard roots:
-[INF]   *.herokuapp.com
+[INF] Found 8 wildcard roots:
+[INF]   *.netlify.com
 [INF]   *.dev.projectdiscovery.io
-[INF]   *.vercel.app
-[INF]   *.ngrok.io
 [INF]   *.netlify.app
-[INF]   *.netlify.com
+[INF]   *.ngrok.io
+[INF]   *.wordpress.com
+[INF]   *.vercel.app
 [INF]   *.github.io
-example.com
-herokuapp.com
-netlify.app
-projectdiscovery.io
-vercel.app
-[INF] Found 5 non-wildcard domains (10 wildcard subdomains filtered)
+[INF]   *.herokuapp.com
+cloud.projectdiscovery.io
+docs.projectdiscovery.io
+www.example.com
+[INF] Found 3 non-wildcard domains (11 wildcard subdomains filtered)
 ```
 
 The wildcard retry count can be configured with `-wildcard-retry` (default 5):
@@ -495,7 +494,7 @@ func main() {
 - As default `dnsx` uses Google, Cloudflare, Quad9 [resolver](https://github.com/projectdiscovery/dnsx/blob/43af78839e237ea8cbafe571df1ab0d6cbe7f445/libs/dnsx/dnsx.go#L31).
 - Custom resolver list can be loaded using the `r` flag.
 - Domain name (`wd`) input is required for wildcard filtering with `-wd`. The `-sw` flag provides automatic wildcard detection without needing `-wd`.
-- DNS record flag can not be used when using wildcard filtering with `-wd`.
+- DNS record flags cannot be used when using wildcard filtering (`-wd` or `-sw`).
 - DNS resolution (`l`) and DNS brute-forcing (`w`) can't be used together.
 - VPN operators tend to filter high DNS/UDP traffic, therefore the tool might experience packets loss (eg. [Mullvad VPN](https://github.com/projectdiscovery/dnsx/issues/221)). Check [this potential solution](./MULLVAD.md).