doc: Use the term "Procedure" for definitions.

In an effort to homogenize things, commit
3c40dfe2851dd4ef48d2711f9f3531c06afbe1f2 replaced:

  @deffn {Scheme Procedure}

with:

  @defun

However, the latter prints "Function" when all existing material about
Scheme uses the term "procedure".

Thus, for consistency, this commit switches to:

  @deffn {Procedure}

* doc/guix.texi, doc/contributing.texi: Use "@deffn {Procedure}"
consistently rather than "@defun" or similar.

0 files changed, 0 insertions, 0 deletions