misc: use tab as separator in maintainers file

Type: style

Change-Id: I9bf61b0b9fd35941fda52c0eef99c7c95db9cba8
Signed-off-by: Vratko Polak <vrpolak@cisco.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 4c7345d..57b049b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -388,9 +388,9 @@
 F:	src/plugins/acl/
 
 Plugin - NAT
-I:      nat
-M:      Ole Troan <ot@cisco.com>
-F:      src/plugins/nat/
+I:	nat
+M:	Ole Troan <ot@cisco.com>
+F:	src/plugins/nat/
 
 Plugin - AVF Device driver
 I:	avf
@@ -493,10 +493,10 @@
 F:	src/plugins/srv6-as/
 
 Plugin - IPv6 Segment Routing Mobile
-I:      srv6-mobile
-M:      Tetsuya Murakami <tetsuya.mrk@gmail.com>
+I:	srv6-mobile
+M:	Tetsuya Murakami <tetsuya.mrk@gmail.com>
 M:	Satoru Matsushima <satoru.matsushima@gmail.com>
-F:      src/plugins/srv6-mobile/
+F:	src/plugins/srv6-mobile/
 
 Plugin - Link Aggregation Control Protocol
 I:	lacp