Change console.info to console.debug

By mistake I wrote |console.info| when I meant |console.debug|.

Change-Id: I26e1f5ca55e0df3ca1609fe3f350039577fbd2ae
diff --git a/src/content_scripts/console_inject.js b/src/content_scripts/console_inject.js
index 7da96b4..837c2ae 100644
--- a/src/content_scripts/console_inject.js
+++ b/src/content_scripts/console_inject.js
@@ -679,7 +679,7 @@
 
           var lastMessageId = thread?.[1]?.[2]?.[10];
 
-          console.info('[forceMarkAsRead] lastMessageId is:', lastMessageId);
+          console.debug('[forceMarkAsRead] lastMessageId is:', lastMessageId);
 
           if (lastMessageId === undefined)
             throw new Error(