grep: remove 2 examples (#1750)

* grep: remove 2 examples

Make the page conform to our maximum limit of 8 examples

Fixes #1695

* Address review comments

pages/common/grep.md

@@ -23,17 +23,9 @@
 
 `grep -{{C|B|A}} 3 {{search_string}} {{path/to/file}}`
 
-- Print the count of matches instead of the matching text:
+- Print file name with the corresponding line number for each match:
 
-`grep -c {{search_string}} {{path/to/file}}`
-
-- Print line number for each match:
-
-`grep -n {{search_string}} {{path/to/file}}`
-
-- Print file names with matches:
-
-`grep -l {{search_string}} {{path/to/file}}`
+`grep -Hn {{search_string}} {{path/to/file}}`
 
 - Use the standard input instead of a file: