Fix space handling in URLs

[raviqqe]

Close #72

[codecov]

Codecov Report

Merging #103 into master will decrease coverage by 0.28%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #103      +/-   ##
==========================================
- Coverage   73.72%   73.44%   -0.29%     
==========================================
  Files          20       20              
  Lines         373      369       -4     
==========================================
- Hits          275      271       -4     
  Misses         76       76              
  Partials       22       22              

Impacted Files	Coverage Δ
link_finder.go	100.00% <100.00%> (ø)

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