fix(i18n): fix incorrect translation for custom series name in langDE

[A-Loot]

Brief Information

This pull request is in the type of:

• bug fixing
• new feature
• others

What does this PR do?

Replaces an incorrect translation in the German language files.

Details

Before

The translation of series.typeNames.custom was taken from the Czech translation instead of being translated to German.

After

The incorrect translation has been replaced by an appropriate German translation.

Document Info

One of the following should be checked.

• This PR doesn't relate to document changes
• The document should be updated later
• The document changes have been made in apache/echarts-doc#xxx

Misc

Security Checking

• This PR uses security-sensitive Web APIs.

ZRender Changes

• This PR depends on ZRender changes (ecomfe/zrender#xxx).

Related test cases or examples to use the new APIs

N.A.

Merging options

• Please squash the commits into a single one when merging.

Other information

[echarts-bot]

Thanks for your contribution!
The community will review it ASAP. In the meanwhile, please checkout the coding standard and Wiki about How to make a pull request.

Please DO NOT commit the files in dist, i18n, and ssr/client/dist folders in a non-release pull request. These folders are for release use only.

[echarts-bot]

Congratulations! Your PR has been merged. Thanks for your contribution! 👍