Fix JSON formatting issue and typos

[Himess]

## Description
This PR resolves a JSON formatting issue and addresses multiple typos across the codebase. Below is a detailed breakdown of the changes made:

1. GroupNFT.sol
Issue:
The 'description' field in the 'tokenURI' function contained incorrect JSON formatting, which could lead to invalid JSON.
'"description": IPAsset Group",' to '"description": "IPAsset Group",'

2. IPAccountImpl.sol
Issues:
1-The word 'bethe' was a typo in a comment.
2-A missing word ('for') in a comment made it unclear.
'bethe' to 'be the'
'/// @dev Updates the IP Account's state all execute transactions.' to '/// @dev Updates the IP Account's state for all executed transactions.'

3. StorageLayoutCheck.s.sol
Issue:
'string.concat' was unnecessarily used for a single string in the 'inputBuilder.'

'inputBuilder[i++] = string.concat("@openzeppelin/upgrades-core");' to 'inputBuilder[i++] = "@openzeppelin/upgrades-core";'


Why These Changes Were Made
-To ensure valid JSON formatting for GroupNFT.
-To fix typos and improve clarity in comments for better readability.
-To remove unnecessary code and improve efficiency in StorageLayoutCheck.