Fix some typos.

[zhanluxianshen]

Fix some typos.

[coveralls]

Pull Request Test Coverage Report for Build 11936673789

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 1 (0.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 51.212%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
api/api.go	0	1	0.0%

Totals
Change from base Build 11842432078:	0.0%
Covered Lines:	5512
Relevant Lines:	10763

---

💛 - Coveralls

[chai2010]

接收PR需要签署一个凹语言贡献者协议: wca.pdf。签署者是“甲方”，信息为Git提交日志中使用的email地址，签署完成后需要以该email地址将协议PDF格式的文件发送到 wca@wa-lang.org 邮箱。然后项目管理员在检查到CLA文件有效并反馈后，在wca/check-cla.go 文件的wcaMap加入对应的邮箱地址。

在CLA验证通过后可进入正常的review流程。感谢对凹语言项目的支持。

[zhanluxianshen]

@chai2010
请问pdf咋个签署的啊， 没看见对应的签署链接呢？

[chai2010]

@chai2010 请问pdf咋个签署的啊， 没看见对应的签署链接呢？

https://github.com/wa-lang/wa/blob/master/wca/readme.md

[zhanluxianshen]

@chai2010
多谢， 已发送邮箱wca

[chai2010]

LGTM