Make zh_cn/tour/pattern_matching.md up to date#1341

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Philippus merged 1 commit intoscala:masterfrom

dongxuwang:code-blocks-sync-2

May 31, 2019

Commits on May 31, 2019

Fix Chinese Simple(zh_CN) version of issue#1339, based on commit https://github.com/scala/docs.scala-lang/commit/ff6580c6247ee091b4805335a67480f2153c3bec.
dongxuwang
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