[ext-pages] Fix for specifying an initial page before sending the paginator (#859)

Author: krittick

discord/ext/pages/pagination.py

@@ -604,7 +604,7 @@ async def send(
             raise TypeError(f"expected abc.Messageable not {target.__class__!r}")
 
         self.update_buttons()
-        page = self.pages[0]
+        page = self.pages[self.current_page]
         page = self.get_page_content(page)
 
         self.user = ctx.author
@@ -657,7 +657,7 @@ async def respond(
 
         self.update_buttons()
 
-        page = self.pages[0]
+        page = self.pages[self.current_page]
         page = self.get_page_content(page)
 
         self.user = interaction.user