Fixde typo on index and added in some more info

docs/examples/grep.md

@@ -1,2 +1,2 @@
-#Grep examples
+# Grep examples
 

docs/examples/lsof.md

@@ -0,0 +1,4 @@
+# lsof examples
+
+```COMMAND   PID USER   FD   TYPE DEVICE SIZE/OFF    NODE NAME
+tail    17481  ben    3r   REG   0,49      240 1220028 docs/index.md```