[v2] Update versions in README

[yurishkuro]

Which problem is this PR solving?

• README was referring to 1.59 version as example

Description of the changes

• Update to refer to 2.0.0
• Clean-up

How was this change tested?

• CI

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.47%. Comparing base (6e695b3) to head (bb0e1ae).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6206      +/-   ##
==========================================
- Coverage   96.49%   96.47%   -0.02%     
==========================================
  Files         354      354              
  Lines       20127    20127              
==========================================
- Hits        19421    19418       -3     
- Misses        522      524       +2     
- Partials      184      185       +1     

Flag	Coverage Δ
badger_v1	8.31% <ø> (ø)
badger_v2	1.67% <ø> (ø)
cassandra-4.x-v1	14.39% <ø> (ø)
cassandra-4.x-v2	1.61% <ø> (ø)
cassandra-5.x-v1	14.39% <ø> (ø)
cassandra-5.x-v2	1.61% <ø> (ø)
elasticsearch-6.x-v1	18.59% <ø> (-0.01%)	⬇️
elasticsearch-7.x-v1	18.68% <ø> (ø)
elasticsearch-8.x-v1	18.84% <ø> (-0.01%)	⬇️
elasticsearch-8.x-v2	1.66% <ø> (-0.02%)	⬇️
grpc_v1	9.48% <ø> (ø)
grpc_v2	7.00% <ø> (+<0.01%)	⬆️
kafka-v1	8.88% <ø> (ø)
kafka-v2	1.67% <ø> (ø)
memory_v2	1.66% <ø> (-0.02%)	⬇️
opensearch-1.x-v1	18.73% <ø> (ø)
opensearch-2.x-v1	18.73% <ø> (ø)
opensearch-2.x-v2	1.66% <ø> (ø)
tailsampling-processor	0.46% <ø> (ø)
unittests	95.38% <ø> (-0.02%)	⬇️

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[mahadzaryab1]

just a couple of questions

[mahadzaryab1]

should we link the new blog post here?

[yurishkuro]

The other post is more technical. Ideally this should point to the docs instead of a blog post.

[mahadzaryab1]

do we want to do that in this PR?

[yurishkuro]

It's not a particularly critical README. We do need to push more visibility though for v2, maybe in the main README.