Fix various spelling issues (#274).

Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>.

modules/commands/bs_kick.cpp

@@ -1335,7 +1335,7 @@ class BSKick : public Module
 			Anope::string nbuf = Anope::NormalizeBuffer(realbuf);
 			bool casesensitive = Config->GetModule("botserv")->Get<bool>("casesensitive");
 
-			/* Normalize can return an empty string if this only conains control codes etc */
+			/* Normalize can return an empty string if this only contains control codes etc */
 			if (badwords && !nbuf.empty())
 				for (unsigned i = 0; i < badwords->GetBadWordCount(); ++i)
 				{

modules/commands/ns_cert.cpp

@@ -55,7 +55,7 @@ struct NSCertListImpl : NSCertList
 
 	/** Get an entry from the nick's cert list by index
 	 *
-	 * @param entry Index in the certificaate list vector to retrieve
+	 * @param entry Index in the certificate list vector to retrieve
 	 * @return The fingerprint entry of the given index if within bounds, an empty string if the vector is empty or the index is out of bounds
 	 *
 	 * Retrieves an entry from the certificate list corresponding to the given index.

modules/commands/ns_group.cpp

@@ -282,7 +282,7 @@ class CommandNSUngroup : public Command
 	{
 		this->SendSyntax(source);
 		source.Reply(" ");
-		source.Reply(_("This command ungroups your nick, or if given, the specificed nick,\n"
+		source.Reply(_("This command ungroups your nick, or if given, the specified nick,\n"
 				"from the group it is in. The ungrouped nick keeps its registration\n"
 				"time, password, email, greet, language, and url. Everything else\n"
 				"is reset. You may not ungroup yourself if there is only one nick in\n"