fix http update manifest URL

[heydabop]

Version: 25.11.17.1

What does this implement/fix?

After taking control of the H-2 with ESPHomedevice builder, the following errors are printed on boot

[22:40:00.053][E][component:314]: http_request.update set Error flag: Failed to fetch manifest from https://apolloautomation.github.io/H-2/firmware2/manifest.json
[22:40:00.054][E][http_request.idf:207][update_task]: HTTP Request failed; URL: https://apolloautomation.github.io/H-2/firmware2/manifest.json; Code: 404
[22:40:00.057][E][component:314][update_task]: http_request set Error flag: unspecified
[22:40:01.060][E][component:342]: http_request cleared Error flag

https://apolloautomation.github.io/H-2/firmware2/manifest.json returns a 404, while https://apolloautomation.github.io/H-/firmware/manifest.json does not, so I assume firmware2 isn't intended.

Types of changes

• Bugfix (fixed change that fixes an issue)
• New feature (thanks!)
• Breaking change (repair/feature that breaks existing functionality)
• Dependency Update - Does not publish
• Other - Does not publish
• Website of github readme file update - Does not publish
• Github workflows - Does not publish

Checklist / Checklijst:

• The code change has been tested and works locally
• The code change has not yet been tested

If user-visible functionality or configuration variables are added/modified:

• Added/updated documentation for the web page

[Bunton33]

Thanks for your help! We made the change in this PR. 407d9b7