Annotations and tests should find each other when searching

[seebees]

Given an annotation in code like this

//= master_key_spec.txt#2.1
//# On initialization, the caller MUST provide:
//# *  An AWS KMS key identifier
//# *  An AWS KMS SDK client

Currently the test looks like this

//= master_key_spec.txt#2.1
//= type=test
//# On initialization, the caller MUST provide:
//# *  An AWS KMS key identifier
//# *  An AWS KMS SDK client

However, this means when searching for the test from the code
or the code from the test using a simple search,
the //= type=test line needs to be added or removed.

I suggest changing this to place the optional type
at the end of the annotation.
Like this

//= master_key_spec.txt#2.1
//# On initialization, the caller MUST provide:
//# *  An AWS KMS key identifier
//# *  An AWS KMS SDK client
//= type=test

Another option would be to append the requirement number to spec reference.
So this would be the 5th requirement in the section:

//= master_key_spec.txt#2.1&n=5