chore: readme: Fix link, typos, copy editing

[rasa]

Also closes #914, #939.

[codecov-commenter]

Codecov Report

Merging #974 (11703b6) into master (3900dc3) will decrease coverage by 0.06%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #974      +/-   ##
==========================================
- Coverage   46.74%   46.67%   -0.07%     
==========================================
  Files          11       11              
  Lines        1459     1459              
==========================================
- Hits          682      681       -1     
- Misses        641      642       +1     
  Partials      136      136              

Impacted Files	Coverage Δ
sqlite3.go	52.83% <0.00%> (-0.12%)	⬇️

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[mattn]

Thank you

[rasa]

Closes #939 .