Pkg.installed() is deprecated

[azev77]

Is it work keeping Pkg.installed() in the cheat sheet?

julia> Pkg.installed()
┌ Warning: Pkg.installed() is deprecated
└ @ Pkg C:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.6\Pkg\src\Pkg.jl:566
Dict{String, VersionNumber} with 14 entries:
  "CSV"               => v"0.8.5"
  "Distributions"     => v"0.24.18"
  "TemporalGPs"       => v"0.5.11"
  "ParameterHandling" => v"0.3.2"
  "Interpolations"    => v"0.13.2"
  "Optim"             => v"1.3.0"
  "HTTP"              => v"0.9.10"
  "InfiniteOpt"       => v"0.4.0"
  "AbstractGPs"       => v"0.3.5"
  "Ipopt"             => v"0.6.5"
  "KernelFunctions"   => v"0.10.5"
  "Plots"             => v"1.16.5"
  "Zygote"            => v"0.6.12"
  "DataFrames"        => v"1.1.1"

[logankilpatrick]

Probably worth removing!

[brakmic]

Just open a PR and I will merge it.

[logankilpatrick]

Done @azev77