Better explanation for multiple commands in the Hooks section of the README

[Mastermindaxe]

Changes

• [x] Added a better explanation for multiple commands in hooks
• [x] Minor formatting of the markdown file (Removal of trailing whitespaces)

Related Issues

• Refs #137

[Mastermindaxe]

I'm not sure if we should just enhance the example with a command that uses && for command chaining. What do you think?

[calebcartwright]

I'm not sure if we should just enhance the example with a command that uses && for command chaining. What do you think?

I'd like to include this up above in the examples under the Configuration section.

Maybe we could change from this:

[hooks]
pre-commit = "cargo test"
prepare-commit-msg = "do-something && then-do-something-else"
# Array syntax for multiple hooks available in v0.12.0+
pre-push = ["cargo check", "cargo fmt -- --check"]
post-commit = "echo yay"

...

[codecov[bot]]

Codecov Report

Merging #143 (f3fb029) into master (e284e15) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##            master      #143   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            4         4           
  Lines          144       142    -2     
=========================================
- Hits           144       142    -2     

Impacted Files	Coverage Δ
src/git.rs	100.00% <0.00%> (ø)

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