Update Command-Reference.md (sonic-net#1075)

Aligned single back quotes in .md file

doc/Command-Reference.md

@@ -2381,9 +2381,9 @@ This show command displays the port capability for all interfaces i.e. index, la
  "alias_at_lanes": "Eth1/1, Eth1/2, Eth1/3, Eth1/4"
  },... continue
  }
-
+ ```
 The "current-mode" subcommand is used to display current breakout mode for all interfaces.
-
+ ```
  admin@lnos-x1-a-fab01:~$ show interfaces breakout current-mode
  +-------------+-------------------------+
  | Interface | Current Breakout Mode |
@@ -2450,7 +2450,7 @@ The "errors" subcommand is used to display the interface errors.
  Ethernet4 U 0 0 0 0 0 0
  Ethernet8 U 0 1 0 0 0 0
  Ethernet12 U 0 0 0 0 0 0
-```
+ ```
 
 The "rates" subcommand is used to disply only the interface rates. 
 
@@ -2463,7 +2463,7 @@ The "rates" subcommand is used to disply only the interface rates.
  Ethernet4 U 469679 N/A N/A N/A 469245 N/A N/A N/A
  Ethernet8 U 466660 N/A N/A N/A 465982 N/A N/A N/A
  Ethernet12 U 466579 N/A N/A N/A 466318 N/A N/A N/A
-```
+ ```
 
 
 The "rif" subcommand is used to display l3 interface counters. Layer 3 interfaces include router interfaces, portchannels and vlan interfaces.