Merge pull request paritytech#141 from subspace/root-block-extrinsic-…

…docs

Update `store_root_blocks` extrinsic docs

crates/pallet-subspace/src/lib.rs

@@ -477,11 +477,8 @@ mod pallet {
  Ok(())
  }
 
- /// Submit new root block to the blockchain. Contents of this extrinsic can't be verified in
- /// the runtime at the moment, so that is done in block import pipeline instead.
- ///
- /// This extrinsic must be called unsigned and it is expected that only block authors will
- /// call it (validated in `ValidateUnsigned`).
+ /// Submit new root block to the blockchain. This is an inherent extrinsic and part of the
+ /// Subspace consensus logic.
  #[pallet::weight((<T as Config>::WeightInfo::store_root_blocks(root_blocks.len()), DispatchClass::Mandatory, Pays::No))]
  pub fn store_root_blocks(
  origin: OriginFor<T>,