[minor] [docs] fixed labels

docs/user/accounts/docs.user.accounts.reports.md

@@ -1,6 +1,6 @@
 ---
 {
-	"_label": "Reports"
+	"_label": "Accounting Reports"
 }
 ---
 Some of the major accounting reports are:

docs/user/customer_portal/docs.user.customer_portal.login.md

@@ -1,6 +1,6 @@
 ---
 {
-	"_label": "Login"
+	"_label": "Portal Login"
 }
 ---
 To login into the customer account, the customer has to use his email id and the password sent by ERPNext; generated through the sign-up process.