Update README.md

Author: ogmini

README.md

@@ -261,6 +261,7 @@ Last 8 bytes of the value for each key is the 18-digit Win32 FILETIME Timestamp
 |TeachingTipExplicitClose|0x5f5e10b| Unknown
 |TeachingTipVersion|0x5f5e105| Unknown
 |Theme|0x5f5e104| 0 = System / 1 = Light / 2 = Dark
+|WebAccountId|0x5f5e10c| Unknown
 |WindowPositionBottom|0x5f5e104|
 |WindowPositionHeight|0x5f5e104|
 |WindowPositionLeft|0x5f5e104|
@@ -306,4 +307,4 @@ In random order:
 [JohnHammond](https://github.com/JohnHammond)   
 [JustArion](https://github.com/JustArion)  
 [joost-j](https://github.com/joost-j)   
-[daddycocoaman](https://github.com/daddycocoaman)
+[daddycocoaman](https://github.com/daddycocoaman)