TIL: we can shorten some URLS

With thanks to admin Leandro Di Marco today I learned that
the URLs on bitcoincashresearch can be shortened to remove the
topic from there and just have the /t/num/ which is unique and
auto redirects.

CHIP-2021-01-Allow Smaller Transactions.md

@@ -53,20 +53,20 @@ To avoid the weakness in merkle-blocks we introduce the rule that transactions s
 
 ## References:
 
-Discussion on [bitcoincashresearch](https://bitcoincashresearch.org/t/consensus-change-proposal-min-tx-size-of-100-bytes-instead-forbid-64-byte-txs/154)
+Discussion on [bitcoincashresearch](https://bitcoincashresearch.org/t/154)
 
 [Leaf-Node weakness in Bitcoin Merkle Tree Design](https://bitslog.wordpress.com/2018/06/09/leaf-node-weakness-in-bitcoin-merkle-tree-design/)
 
 ## Statements
 
 **Freetrader, BCHN release manager.**  
-> I reviewed this and would support activation of this CHIP (revision [75b97e22a3dc295de7373255025f38cd0911b866](https://gitlab.com/bitcoin.cash/chips/-/blob/75b97e22a3dc295de7373255025f38cd0911b866/CHIP-2021-01-Allow%20Smaller%20Transactions.md)) in the first network upgrade after May 2021. ([source](https://bitcoincashresearch.org/t/consensus-change-proposal-min-tx-size-of-100-bytes-instead-forbid-64-byte-txs/154/32?u=tom))
+> I reviewed this and would support activation of this CHIP (revision [75b97e22a3dc295de7373255025f38cd0911b866](https://gitlab.com/bitcoin.cash/chips/-/blob/75b97e22a3dc295de7373255025f38cd0911b866/CHIP-2021-01-Allow%20Smaller%20Transactions.md)) in the first network upgrade after May 2021. ([source](https://bitcoincashresearch.org/t/154/32))
 
 **Benjamin Scherrey ([proteusguy](https://bitcoincashresearch.org/u/proteusguy)), ActorForth** 
-> I’ve reviewed the CHIP and support it as written. My interest is as a development stakeholder. ([source](https://bitcoincashresearch.org/t/consensus-change-proposal-min-tx-size-of-100-bytes-instead-forbid-64-byte-txs/154/31?u=tom))
+> I’ve reviewed the CHIP and support it as written. My interest is as a development stakeholder. ([source](https://bitcoincashresearch.org/t/154/31))
 
 **Andrew Stone, developer Bitcoin Unlimited**  
-> Awemany (working as a BU dev) and I originally brought this problem to the BCH community’s attention. When ABC chose to limit at 100 bytes I pointed out this was idiocy way back before the original fork, and was ignored. So BU is happy to support a change that fixes yet-another-dumb-decision autocratically made during the ABC days. ([source](https://bitcoincashresearch.org/t/consensus-change-proposal-min-tx-size-of-100-bytes-instead-forbid-64-byte-txs/154/36))
+> Awemany (working as a BU dev) and I originally brought this problem to the BCH community’s attention. When ABC chose to limit at 100 bytes I pointed out this was idiocy way back before the original fork, and was ignored. So BU is happy to support a change that fixes yet-another-dumb-decision autocratically made during the ABC days. ([source](https://bitcoincashresearch.org/t/154/36))
 
 ## Copyright Notice
 

CHIP-2021-01-Restrict Transaction Versions.md

@@ -39,19 +39,19 @@ Blocks that have transactions which violate this rule shall be deemed invalid.
 
 # References:
 
-Discussion on [bitcoincashresearch](https://bitcoincashresearch.org/t/restrict-transaction-version-numbers/173)
+Discussion on [bitcoincashresearch](https://bitcoincashresearch.org/t/173)
 
 ## Statements
 
 **BigBlockIfTrue, BCHN developer.**  
-> Reviewed, looks good to me. Recommend activation of this CHIP in the first network upgrade after May 2021. [source](https://bitcoincashresearch.org/t/restrict-transaction-version-numbers/173/7)
+> Reviewed, looks good to me. Recommend activation of this CHIP in the first network upgrade after May 2021. [source](https://bitcoincashresearch.org/t/173/7)
 
 **Freetrader, BCHN release manager.**  
 Quoting the supporting statement from BigBlockIfTrue:  
-> Likewise [source](https://bitcoincashresearch.org/t/restrict-transaction-version-numbers/173/10)
+> Likewise [source](https://bitcoincashresearch.org/t/173/10)
 
 **Andrew Stone, developer Bitcoin Unlimited**  
-> I support this change, so BU does so unless a BUIP is explicitly raised against it. ([source](https://bitcoincashresearch.org/t/restrict-transaction-version-numbers/173/11))
+> I support this change, so BU does so unless a BUIP is explicitly raised against it. ([source](https://bitcoincashresearch.org/t/173/11))
 
 ## Copyright Notice