Fix grammar

DiscordChatExporter.Cli/Commands/Base/DiscordCommandBase.cs

@@ -30,7 +30,7 @@ public abstract class DiscordCommandBase : ICommand
     [CommandOption(
         "respect-rate-limits",
         Description = "Whether to respect advisory rate limits. "
-            + "If disabled, only hard rate limits (i.e. 429 responses) will be respected."
+            + "If disabled, only hard rate limits (i.e., 429 responses) will be respected."
     )]
     public bool ShouldRespectRateLimits { get; set; } = true;
 

DiscordChatExporter.Cli/Commands/Base/ExportCommandBase.cs

@@ -59,7 +59,7 @@ public abstract class ExportCommandBase : DiscordCommandBase
         "partition",
         'p',
         Description = "Split the output into partitions, each limited to the specified "
-            + "number of messages (e.g. '100') or file size (e.g. '10mb')."
+            + "number of messages (e.g., '100') or file size (e.g., '10mb')."
     )]
     public PartitionLimit PartitionLimit { get; set; } = PartitionLimit.Null;