Fix phone number formats for en-GB

[panilya]

Issue: #163
Minimized error code to +-10

[codecov-commenter]

Codecov Report

Merging #274 (19737b5) into master (94d9955) will increase coverage by 0.41%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #274      +/-   ##
============================================
+ Coverage     94.26%   94.68%   +0.41%     
- Complexity     1881     1892      +11     
============================================
  Files           195      195              
  Lines          3819     3819              
  Branches        391      391              
============================================
+ Hits           3600     3616      +16     
+ Misses          117      103      -14     
+ Partials        102      100       -2     

Impacted Files	Coverage Δ
.../java/net/datafaker/service/FakeValuesService.java	87.92% <0.00%> (+0.60%)	⬆️
src/main/java/net/datafaker/Internet.java	90.41% <0.00%> (+1.36%)	⬆️
src/main/java/net/datafaker/Address.java	97.14% <0.00%> (+2.85%)	⬆️
src/main/java/net/datafaker/Commerce.java	100.00% <0.00%> (+4.00%)	⬆️
src/main/java/net/datafaker/IdNumber.java	100.00% <0.00%> (+6.66%)	⬆️
src/main/java/net/datafaker/Lorem.java	97.91% <0.00%> (+8.33%)	⬆️
...ava/net/datafaker/HitchhikersGuideToTheGalaxy.java	100.00% <0.00%> (+11.11%)	⬆️
src/main/java/net/datafaker/OscarMovie.java	100.00% <0.00%> (+16.66%)	⬆️

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[bodiam]

@snuyanzin seems the concurrent tests are still flaky

[snuyanzin]

looks like i forgot one field
currently playing with #275
in case it will not fail after a bunch of runs i'll merge it