cleanup markdown formatting

slip-0013.md

@@ -39,7 +39,7 @@ The index is used so one can generate more keys corresponding to the same URI.
 
 ##HD Structure
 
-1. First concatenate `index` with the URI (`uri`). Use little endian for `index`. 
+1. First concatenate `index` with the URI (`uri`). Use little endian for `index`.
 
 2. Compute the SHA256 hash of the result (`hash`).
 
@@ -52,7 +52,7 @@ The index is used so one can generate more keys corresponding to the same URI.
 6. Derive the HD node `m/13'/A'/B'/C'/D'` according to BIP32.
 
 ###Worked example
-1. `index + uri`=`0` + `https://satoshi@bitcoin.org/login` 
+1. `index + uri`=`0` + `https://satoshi@bitcoin.org/login`
 
 2. `sha256(index + uri)` = `d0e2389d4c8394a9f3e32de01104bf6e8db2d9e2bb0905d60fffa5a18fd696db`
 
@@ -62,7 +62,7 @@ The index is used so one can generate more keys corresponding to the same URI.
 
 5. `A'` = 2637750992, `B'` = 2845082444, `C'` = 3761103859, `D'` = 4005495825
 
-6. `bip32 node path` = `m/2147483661/2637750992/2845082444/3761103859/4005495825` 
+6. `bip32 node path` = `m/2147483661/2637750992/2845082444/3761103859/4005495825`
 
 See a [Python example](https://github.com/trezor/python-trezor/blob/ca45019918bc4c54f1ace899a9acf397c8f4d92f/tests/test_msg_signidentity.py#L27).