Fix Gruntfile.js to prevent erroneous replace

[nekonenene]

Proposed changes

When exec the release script npx grunt release --oldver=1.0.0 --newver=1.0.1, grunt accidentally replaced "grunt-contrib-jade": "^1.0.0" to "grunt-contrib-jade": "^1.0.1". This behavior can cause a problem, so I fixed it to replace the strings appropriately. Additionally, I removed replace:readme task because the description of "Current Version : " has already disappeared from README.

Types of changes

• Bug fix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality to change).

Checklist:

• I have read the CONTRIBUTING document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[DanielRuf]

LGTM

Thanks for fixing this.

[Pierstoval]

Okay with this!

I'm wondering whether we could move the project forward by changing the build process for a "simpler/modern/easier to maintain" one 🤔