fix(docs): fix install command

[mattsse]

cargo install uses release profile by default and --path --bin does not work in workspaces

ref rust-lang/cargo#7124

Closes #1501

[codecov-commenter]

Codecov Report

Merging #1503 (e376eca) into main (44e1d13) will decrease coverage by 0.03%.
The diff coverage is n/a.

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@@            Coverage Diff             @@
##             main    #1503      +/-   ##
==========================================
- Coverage   76.14%   76.12%   -0.03%     
==========================================
  Files         358      358              
  Lines       42706    42706              
==========================================
- Hits        32520    32509      -11     
- Misses      10186    10197      +11     

Flag	Coverage Δ
integration-tests	21.84% <ø> (+<0.01%)	⬆️
unit-tests	70.50% <ø> (-0.12%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
crates/net/discv4/src/proto.rs	89.66% <0.00%> (-3.13%)	⬇️
crates/net/discv4/src/lib.rs	66.01% <0.00%> (-0.22%)	⬇️
crates/net/network/src/peers/manager.rs	82.46% <0.00%> (-0.09%)	⬇️
crates/net/downloaders/src/headers/task.rs	83.67% <0.00%> (ø)
crates/net/network/src/manager.rs	52.49% <0.00%> (+0.18%)	⬆️
crates/net/eth-wire/src/ethstream.rs	84.44% <0.00%> (+0.47%)	⬆️
crates/stages/src/stages/hashing_storage.rs	96.19% <0.00%> (+0.54%)	⬆️
crates/net/downloaders/src/bodies/task.rs	96.59% <0.00%> (+1.13%)	⬆️

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