Properly space Pub Key Hash

tips/TIP-0042/tip-0042.md

@@ -232,7 +232,7 @@ that account.
   - `Block Issuer Keys Count <= 128`.
   - The `Block Issuer Keys` must be lexically ordered and unique, both based on the following comparison criteria:
     - `Block Issuer Key Type` as the first criteria for all Block Issuer Keys.
-    - `PubKeyHash` as the second criteria for _Ed25519 Public Key Hash Block Issuer Keys_.
+    - `Pub Key Hash` as the second criteria for _Ed25519 Public Key Hash Block Issuer Keys_.
 
 ### Additional Transaction Semantic Validation Rules
 
@@ -1043,9 +1043,9 @@ creation and block issuer feature transition.
 
 ### Implicit Account Block Issuance
 
-An implicit account can issue blocks by using the `PubKeyHash` of the _Implicit Account Creation Address_ itself as an
+An implicit account can issue blocks by using the `Pub Key Hash` of the _Implicit Account Creation Address_ itself as an
 _Ed25519 Public Key Hash Block Issuer Key_. Therefore, the block's signature must contain the public key from which the
-`PubKeyHash` was derived from and the signature must be computed from the corresponding private key.
+`Pub Key Hash` was derived from and the signature must be computed from the corresponding private key.
 
 # Migration