streamline doc formatting

- it's implicit that the description is the description and we got
  no other subsections but the example

- the prototype is generated by vmodtool already

src/vmod_blobcode.vcc

@@ -165,11 +165,10 @@ uppercase, respectively.
 $Function BLOB decode(ENUM {IDENTITY, BASE64, BASE64URL, BASE64URLNOPAD,
                             HEX, URL} decoding="IDENTITY", STRING_LIST encoded)
 
-Description
-	Returns the BLOB derived from the string ``encoded``
-        according to the scheme specified by ``decoding``.
+Returns the BLOB derived from the string ``encoded`` according to the
+scheme specified by ``decoding``.
 
-	``decoding`` defaults to IDENTITY
+``decoding`` defaults to IDENTITY
 
 Example::
 
@@ -186,20 +185,18 @@ $Function BLOB decode_n(INT n,
 			BASE64URLNOPAD, HEX, URL} decoding="IDENTITY",
 			STRING_LIST encoded)
 
-Description
-	Same as ``decode()``, but only decode the first ``n`` characters
-	of the decoded string. If ``n`` is greater than the length of
-	the string, then return the same result as ``decode()``.
+Same as ``decode()``, but only decode the first ``n`` characters of
+the decoded string. If ``n`` is greater than the length of the string,
+then return the same result as ``decode()``.
 
 $Function STRING encode(ENUM {IDENTITY, BASE64, BASE64URL, BASE64URLNOPAD,
                               HEXUC, HEXLC, URLUC, URLLC} encoding="IDENTITY",
 			      BLOB blob)
 
-Description
-	Returns a string representation of the BLOB ``blob`` as
-	specifed by ``encoding``.
+Returns a string representation of the BLOB ``blob`` as specifed by
+``encoding``.
 
-	``encoding`` defaults to IDENTITY
+``encoding`` defaults to IDENTITY
 
 Example::
 
@@ -222,13 +219,12 @@ $Function STRING transcode(ENUM {IDENTITY, BASE64, BASE64URL, BASE64URLNOPAD,
                                  HEXUC, HEXLC, URLUC, URLLC} encoding="IDENTITY",
                            STRING_LIST encoded)
 
-Description
-	Translates from one encoding to another, by first decoding
-	the string ``encoded`` according to the scheme ``decoding``,
-	and then returning the encoding of the resulting blob
-	according to the scheme ``encoding``.
+Translates from one encoding to another, by first decoding the string
+``encoded`` according to the scheme ``decoding``, and then returning
+the encoding of the resulting blob according to the scheme
+``encoding``.
 
-	``decoding`` and ``encoding`` default to IDENTITY
+``decoding`` and ``encoding`` default to IDENTITY
 
 Example::
 
@@ -254,14 +250,12 @@ $Function STRING transcode_n(INT n,
                                    HEXUC, HEXLC, URLUC, URLLC} encoding="IDENTITY",
                              STRING_LIST encoded)
 
-Description
-	Same as ``transcode()``, but only from the first ``n`` characters
-	of the encoded string.
+Same as ``transcode()``, but only from the first ``n`` characters of
+the encoded string.
 
 $Function STRING version()
 
-Description
-	Returns the version string for this VMOD.
+Returns the version string for this VMOD.
 
 Example::
 
@@ -271,13 +265,8 @@ $Object blob(ENUM {IDENTITY, BASE64, BASE64URL, BASE64URLNOPAD, HEX,
                    URL} decoding="IDENTITY",
              STRING_LIST encoded)
 
-Prototype::
-
-	new OBJ = blobcode.blob(ENUM decoding, STRING_LIST encoded)
-
-Description
-	Creates an object that contains the BLOB derived from the
-	string ``encoded`` according to the scheme ``decoding``.
+Creates an object that contains the BLOB derived from the string
+``encoded`` according to the scheme ``decoding``.
 
 Example::
 
@@ -291,8 +280,7 @@ Example::
 
 $Method BLOB .get()
 
-Description
-	Returns the BLOB created by the constructor.
+Returns the BLOB created by the constructor.
 
 Example::
 
@@ -308,9 +296,8 @@ Example::
 $Method STRING .encode(ENUM {IDENTITY, BASE64, BASE64URL, BASE64URLNOPAD, HEXUC,
                              HEXLC, URLUC, URLLC} encoding="IDENTITY")
 
-Description
-	Returns an encoding of BLOB created by the constructor,
-	according to the scheme ``encoding``.
+Returns an encoding of BLOB created by the constructor, according to
+the scheme ``encoding``.
 
 Example::