Update README.md

Author: chrispassas

README.md

@@ -9,17 +9,17 @@ Source https://tools.netsa.cert.org/silk/faq.html#what-silk
 >SiLK is a suite of network traffic collection and analysis tools developed and maintained by the CERT Network Situational >Awareness Team (CERT NetSA) at Carnegie Mellon University to facilitate security analysis of large networks. The SiLK tool >suite supports the efficient collection, storage, and analysis of network flow data, enabling network security analysts to >rapidly query large historical traffic data sets.
 
 ## Supported File Formats
-| Record Size   | Record Version           | Compression   | Supported     |
-| ------------- | -------------            | ------------- | ------------- |
-| 88            | RWIPV6ROUTING VERSION 1  | None (0)      | YES           |
-| 88            | RWIPV6ROUTING VERSION 1  | Zlib (1)      | YES           |
-| 88            | RWIPV6ROUTING VERSION 1  | Lzo (2)       | YES           |
-| 88            | RWIPV6ROUTING VERSION 1  | Snappy (3)    | YES           |
-| 68            | RWIPV6 VERSION 1         | None (0)      | YES           |
-| 68            | RWIPV6 VERSION 1         | Zlib (1)      | YES           |
-| 68            | RWIPV6 VERSION 1         | Lzo (2)       | YES           |
-| 68            | RWIPV6 VERSION 1         | Snappy (3)    | YES           |
-| 56            | RWIPV6 VERSION 2         | None (0)      | YES           |
-| 56            | RWIPV6 VERSION 2         | Zlib (1)      | YES           |
-| 56            | RWIPV6 VERSION 2         | Lzo (2)       | YES           |
-| 56            | RWIPV6 VERSION 2         | Snappy (3)    | YES           |
+| Record Size   | Record Version           | Compression   | Supported          |
+| ------------- | -------------            | ------------- | -------------      |
+| 88            | RWIPV6ROUTING VERSION 1  | None (0)      | :white_check_mark: |
+| 88            | RWIPV6ROUTING VERSION 1  | Zlib (1)      | :white_check_mark: |
+| 88            | RWIPV6ROUTING VERSION 1  | Lzo (2)       | :white_check_mark: |
+| 88            | RWIPV6ROUTING VERSION 1  | Snappy (3)    | :white_check_mark: |
+| 68            | RWIPV6 VERSION 1         | None (0)      | :white_check_mark: |
+| 68            | RWIPV6 VERSION 1         | Zlib (1)      | :white_check_mark: |
+| 68            | RWIPV6 VERSION 1         | Lzo (2)       | :white_check_mark: |
+| 68            | RWIPV6 VERSION 1         | Snappy (3)    | :white_check_mark: |
+| 56            | RWIPV6 VERSION 2         | None (0)      | :white_check_mark: |
+| 56            | RWIPV6 VERSION 2         | Zlib (1)      | :white_check_mark: |
+| 56            | RWIPV6 VERSION 2         | Lzo (2)       | :white_check_mark: |
+| 56            | RWIPV6 VERSION 2         | Snappy (3)    | :white_check_mark: |