Fix typos in documentation

[donatik27]

Changes Made

packages/sdk/docs/classes/Hop.md

• Changed "reprensenting" to "representing"
  Old: Class reprensenting Hop
  New: Class representing Hop

packages/sdk/docs/classes/Token.md

• Changed "reprensenting" to "representing"
  Old: Class reprensenting ERC20 Token
  New: Class representing ERC20 Token

README.md

• Fixed package path typo
  Old: [@hop-protocol/v2-hop-node](packages/v-2hop-node)
  New: [@hop-protocol/v2-hop-node](packages/v2-hop-node)

Why these changes are needed

1. Correct spelling improves documentation quality and professionalism
2. Consistent terminology helps developers better understand the codebase
3. Fixed package path ensures correct linking in documentation
4. These changes make the documentation more maintainable and easier to read

The corrections focus on fixing typos while maintaining the original meaning and structure of the documentation. No functional changes were made to the code.

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