fix(embeds): make footer text match code

Author: shiftinv

guide/docs/popular-topics/embeds.mdx

@@ -43,7 +43,7 @@ Here is an example of how an embed may look. We will go over embed construction
 					Inline Value
 				</DiscordEmbedField>
 			</DiscordEmbedFields>
-			<span slot="footer">This is a footer.</span>
+			<span slot="footer">Embed Footer</span>
 		</DiscordEmbed>
 	</DiscordMessage>
 </DiscordMessages>