psgrep: various tweaks (#3013)

pages/common/psgrep.md

@@ -1,15 +1,15 @@
 # psgrep
 
-> Search through processes with grep.
+> Search running processes with `grep`.
 
 - Find process lines containing a specific string:
 
 `psgrep {{process_name}}`
 
-- Find process lines containing a specific string, do not include headers:
+- Find process lines containing a specific string, excluding headers:
 
 `psgrep -n {{process_name}}`
 
-- Search using simplified format (PID, user, command):
+- Search using a simplified format (PID, user, command):
 
 `psgrep -s {{process_name}}`