Updated collections.md from julia to jldoctest #56921

[vivekTiw120303]

Changed the julia blocks to jldoctest in collection.md in julia/doc/src/base with proper output

[LilithHafner]

@vivekTiw120303, please stop opening and abandoning PRs address this. Doing that fragments conversation. You can continue with a single PR.

cross ref: #57595, #57619, #57786

[LilithHafner]

The build and doctest CI jobs pass which are the most relevant to this PR. Our CI fails most of the time due to flakeyness. Right now the upload jobs tend to fail so it's okay that they fail on this PR. You can check CI details by clicking on the checks and you can see what checks you can expect to fail by checking the CI failures on master.

[LilithHafner]

The changes in this PR (converting a script to a REPL session) make the documentation harder to read in my opinion. I recommend starting by replacing a single occurrence of julia-repl with jldoctest in a way that doesn't change the rendered output.

[vivekTiw120303]

Ok Sir, thankyou for your guidance, will note all the points above and will work towards it.