Fix typos in the docs from Discord conversation

[galina-opentensor]

https://discord.com/channels/799672011265015819/1176889641547333683/1258875961785712680

• Should be norm(CR) instead of sum(CR)
  https://docs.bittensor.com/emissions#emission

• typo: the both the…
  https://docs.bittensor.com/governance

• - not sure which page it is referred to
  Improvement: make clear that @ is matrix product, and * is element-wise product
  Improvement: threshold is zero, so the definition of W is overly complicated

• https://docs.bittensor.com/getting-started/installation
  pip3 install bittensor --no-deps
  INSTRUCTIONS SHOULD REMOVE --no-deps

• WHY IS THIS REQUIREMENT NEEDED? SEEMS SUPERFLUOUS: doesn’t make
  sense to run two validators

• A hotkey can hold multiple UIDs across separate subnets. However within one
  subnet, each UID must have a unique hotkey.

• https://docs.bittensor.com/staking-and-delegation/delegation
  Daily staking rewards, in proportion to the total stake of the delegate, are credited
  to the delegate as a result of such validation tasks.
  Is this reward only distributed daily? At what time each day?

• https://docs.bittensor.com/staking-and-delegation/staking-polkadot-js
  Stake and delegate are used synonymously

• https://docs.bittensor.com/staking-and-delegation/delegation
  The above percentage of the staking reward is distributed among the delegate's
  nominators in proportion to the nominators' staked TAO amount with this delegate.
  [Above percentage —> REMAINING percentage ]