Reorder the list of directories in RELEASING.md

This not only makes the list easier to read and understand, it also
enables it to be used conveniently as the list of subdirs for an srp

RELEASING.md

@@ -183,28 +183,30 @@ from a sepecific `<SHA>` that had a version bump when compared to CHaP:
 $ ./scripts/add-from-github.sh https://github.com/IntersectMBO/cardano-ledger <SHA> \
   eras/allegra/impl \
   eras/alonzo/impl \
-  eras/alonzo/test-suite eras/babbage/impl \
-  eras/babbage/test-suite eras/conway/impl \
+  eras/alonzo/test-suite \
+  eras/babbage/impl \
+  eras/babbage/test-suite \
+  eras/byron/chain/executable-spec \
+  eras/byron/crypto \
+  eras/byron/crypto/test \
+  eras/byron/ledger/executable-spec \
+  eras/byron/ledger/impl \
+  eras/byron/ledger/impl/test \
+  eras/conway/impl \
   eras/conway/test-suite \
   eras/mary/impl \
+  eras/shelley-ma/test-suite \
   eras/shelley/impl \
   eras/shelley/test-suite \
-  eras/shelley-ma/test-suite \
+  libs/cardano-data \
   libs/cardano-ledger-api \
-  libs/cardano-ledger-core \
   libs/cardano-ledger-binary \
+  libs/cardano-ledger-core \
   libs/cardano-protocol-tpraos \
   libs/non-integral \
-  libs/small-steps \
-  libs/cardano-data \
   libs/set-algebra \
-  libs/vector-map \
-  eras/byron/chain/executable-spec \
-  eras/byron/ledger/executable-spec \
-  eras/byron/ledger/impl \
-  eras/byron/ledger/impl/test \
-  eras/byron/crypto \
-  eras/byron/crypto/test
+  libs/small-steps \
+  libs/vector-map
 ```
 
 More on that command in the section below.