Update monitoring_101.rst

I have added description for Graphite in monitoring_101.rst. Will be writing detailed explanation in monitoring_201.rst
Networking: 802.1q, IOS configuration, transceivers
Merge pull request #195 from hlandau/master

Networking: 802.1q, IOS configuration, transceivers
Use gg instead of :0 and reorder some points
Correct I from 0i to ^i and add ^
Merge pull request #196 from phy1729/patch-1

Use gg instead of :0 and reorder some points
Merge pull request #197 from phy1729/patch-2

Correct I from 0i to ^i and add ^
Update modes per :h vim-modes

Visual, Select, and Ex mode (as well as all additional modes) are left
out as they are not suitable for a 101 course.
Merge pull request #198 from phy1729/vim-modes

Update modes per :h vim-modes
Update monitoring_101.rst

Based on suggestions : https://github.com/opsschool/curriculum/pull/192 , have modified the text accordingly.
Merge pull request #192 from konarkmodi/master

Update monitoring_101.rst