fix: ZapConfig OutputPaths default set stdout

[CodingAdai]

What this PR does:
ZapConfig OutputPaths default set stdout

Which issue(s) this PR fixes:
Fixes issue: apache/dubbo-go#2148

[codecov-commenter]

Codecov Report

Merging #111 (8c50cb2) into master (4c45e16) will increase coverage by 0.04%.
The diff coverage is n/a.

❗ Current head 8c50cb2 differs from pull request most recent head c14e97b. Consider uploading reports for the commit c14e97b to get more accurate results

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

@@            Coverage Diff             @@
##           master     #111      +/-   ##
==========================================
+ Coverage   73.58%   73.62%   +0.04%     
==========================================
  Files          51       51              
  Lines        4959     4959              
==========================================
+ Hits         3649     3651       +2     
+ Misses       1076     1075       -1     
+ Partials      234      233       -1     

Impacted Files	Coverage Δ
time/timer.go	78.52% <0.00%> (+0.67%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.