fix typo in resource-and-context-contextmodule

[eltociear]

What kind of change does this PR introduce?
Fixed typo.

dont -> do not

Did you add tests for your changes?
none

Does this PR introduce a breaking change?
none

What needs to be documented once your changes are merged?
none

[webpack-bot]

For maintainers only:

• This needs to be documented (issue in webpack/webpack.js.org will be filed when merged)
• This needs to be backported to webpack 4 (issue will be created when merged)

[linux-foundation-easycla]

The committers are authorized under a signed CLA.

• ✅ Ikko Ashimine (c8e943c)

[vankop]

@eltociear pls sign CLA

[webpack-bot]

@eltociear The most important CI builds failed. This way your PR can't be merged.

Please take a look at the CI results from azure (1 errors / 1 warnings) and appveyor (failure) and fix these issues.

[eltociear]

@vankop Thank you for contacting me! I signed it.

[sokra]

Thanks