fix(cache): fix wrong url for uuid

[bluelovers]

[axios-cache-adapter] uuid https://xxx.yyy/https://xxx.yyy/zzzzz

[codecov]

Codecov Report

Merging #250 (628799c) into master (2d51cee) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #250   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           13        13           
  Lines          235       234    -1     
=========================================
- Hits           235       234    -1     

Impacted Files	Coverage Δ
src/cache.js	100.00% <100.00%> (ø)
src/serialize.js	100.00% <0.00%> (ø)

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