clippy: fix indentation in documentation

We had several accidental list-item continuation in our docs. Add
newlines to break them up.

Author: apoelstra

examples/pset_blind_coinjoin.rs

@@ -8,6 +8,7 @@
 //! 6. A signs it's input
 //! 7. A finalizes the pset
 //! 8. A extracts and broadcasts the transaction
+//!
 //! During the entire interaction, the output blinding factors for A and B are not
 //! shared with each other.
 extern crate bitcoin;

src/opcodes.rs

@@ -459,10 +459,10 @@ pub mod all {
     pub const OP_INSPECTINPUTVALUE: All = All {code: 0xc9};
     /// Pop a CScriptNum input index idx and push the following depending the type of scriptPubkey:
     /// - If the scriptPubKey is not a native segwit program, push a single sha256
-    /// hash of the scriptPubKey on stack top. Next, push a CScriptNum(-1) to
-    /// indicate a non-native segwit scriptPubKey.
+    ///   hash of the scriptPubKey on stack top. Next, push a CScriptNum(-1) to
+    ///   indicate a non-native segwit scriptPubKey.
     /// - If the scriptPubKey is a native segwit program, push the witness program(2-40)
-    /// followed by a push for segwit version(0-1).
+    ///   followed by a push for segwit version(0-1).
     pub const OP_INSPECTINPUTSCRIPTPUBKEY: All = All {code: 0xca};
     /// Pop a CScriptNum input index idx and push the nSequence(4) as little-endian number.
     pub const OP_INSPECTINPUTSEQUENCE: All = All {code: 0xcb};
@@ -544,6 +544,7 @@ pub mod all {
     /// 1) a 32 byte big endian, unsigned scalar k.
     /// 2) Compressed EC point P, and
     /// 3) compressed EC point Q.
+    ///
     /// Abort if P, Q is invalid or k is not 32 bytes and outside of secp256k1 curve order.
     /// Abort if Q != k*P.
     pub const OP_ECMULSCALARVERIFY: All = All {code: 0xe3};

src/schnorr.rs

@@ -116,6 +116,7 @@ impl TapTweak for UntweakedKeypair {
     ///  * p is the internal private key
     ///  * H is the hash function
     ///  * c is the commitment data
+    ///
     /// The public key is generated from a private key by multiplying with generator point, Q = qG.
     ///
     /// # Returns

src/taproot.rs

@@ -621,7 +621,7 @@ impl ControlBlock {
     ///
     /// # Errors:
     /// - If the control block size is not of the form 33 + 32m where
-    /// 0 <= m <= 128, InvalidControlBlock is returned
+    ///   0 <= m <= 128, InvalidControlBlock is returned
     pub fn from_slice(sl: &[u8]) -> Result<ControlBlock, TaprootError> {
         if sl.len() < TAPROOT_CONTROL_BASE_SIZE
             || (sl.len() - TAPROOT_CONTROL_BASE_SIZE) % TAPROOT_CONTROL_NODE_SIZE != 0