Use consistent quotation marks around subscribers, the name for these users are dependant on the source of where they are integrated from (youtube or twitch), so we should not use a name that is specific to one platform

src/Discord.Net.Core/Entities/Guilds/IGuildIntegration.cs

@@ -21,7 +21,7 @@ namespace Discord
         bool IsSyncing { get; }
         /// <summary> Gets the ID that this integration uses for "subscribers". </summary>
         ulong ExpireBehavior { get; }
-        /// <summary> Gets the grace period before expiring subscribers. </summary>
+        /// <summary> Gets the grace period before expiring "subscribers". </summary>
         ulong ExpireGracePeriod { get; }
         /// <summary> Gets when this integration was last synced. </summary>
         /// <returns> A <see cref="DateTimeOffset"/> containing a date and time of day when the integration was last synced. </returns>