Rename remaining occurences of SRML to FRAME (#4932)

* rename remaining SRML occurences to FRAME

* Some module -> pallet

* remove out of date url

Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
Co-authored-by: Cecile Tonglet <cecile.tonglet@cecton.com>

substrate/frame/balances/src/lib.rs

@@ -92,7 +92,7 @@
 //!
 //! The following examples show how to use the Balances module in your custom module.
 //!
-//! ### Examples from the SRML
+//! ### Examples from the FRAME
 //!
 //! The Contract module uses the `Currency` trait to handle gas payment, and its types inherit from `Currency`:
 //!
@@ -896,7 +896,7 @@ mod imbalances {
 // This works as long as `increase_total_issuance_by` doesn't use the Imbalance
 // types (basically for charging fees).
 // This should eventually be refactored so that the type item that
-// depends on the Imbalance type (DustRemoval) is placed in its own SRML module.
+// depends on the Imbalance type (DustRemoval) is placed in its own pallet.
 struct ElevatedTrait<T: Subtrait<I>, I: Instance>(T, I);
 impl<T: Subtrait<I>, I: Instance> Clone for ElevatedTrait<T, I> {
 	fn clone(&self) -> Self { unimplemented!() }