fixed reference links

Author: nitin312

ERCS/erc-7891.md

@@ -86,9 +86,9 @@ interface IERC7891Burnable is IERC7891 {
 
 ## Rationale
 
-### How ERC-7891 Improves Over Existing Standards
+### How the proposed EIP Improves Over Existing Standards
 
-| Feature                  | [ERC-721](../EIPS/eip-721.md) | [ERC-1155](../EIPS/eip-1155.md) | [ERC-6150](../EIPS/eip-6150.md) | ERC-7891 (Proposed) |
+| Feature                  | [EIP-721](../EIPS/eip-721.md) | [EIP-1155](../EIPS/eip-1155.md) | [EIP-6150](../EIPS/eip-6150.md) | EIP (Proposed) |
 |--------------------------|---------|---------|---------|------------------|
 | Unique NFTs              | ✅      | ❌       | ✅       | ✅                |
 | Fungible & Non-Fungible  | ❌       | ✅       | ❌       | ✅                |
@@ -102,7 +102,7 @@ interface IERC7891Burnable is IERC7891 {
 
 ## Backwards Compatibility
 
-The proposed EIP-7891 extends [EIP-721](../EIPS/eip-721.md) and [EIP-6150](../EIPS/eip-6150.md), making it backward compatible.
+The proposed EIP extends [EIP-721](../EIPS/eip-721.md) and [EIP-6150](../EIPS/eip-6150.md), making it backward compatible.
 
 ## Reference Implementation