Fix: regex example in README is wrong

README.md

@@ -26,7 +26,7 @@
   Search for processes by name, command, or PID. Search for multiple things at once by separating them with commas. For
   example, `arm, x86` will return processes having `arm` or `x86` as a substring of the name or command. You can use
   regular expressions too. For example, `d$` will return a list of daemons (which tend to end in the letter `d`), while
-  `(\w+)\.\w+` will return a list of processes with reverse domain name notation, such as `com.docker.vmnetd`.
+  `^(\w+\.)+\w+$` will return a list of processes with reverse domain name notation, such as `com.docker.vmnetd`.
 
 - 📌 Pin important processes
 - 🛠 Process management (kill processes)