doc: add package uuid-dev to build dependencies

Building mkeficapsule requires include uuid/uuid.h

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/doc/build/gcc.rst b/doc/build/gcc.rst
index 682051a..ee544ad 100644
--- a/doc/build/gcc.rst
+++ b/doc/build/gcc.rst
@@ -30,7 +30,7 @@
       pkg-config python3 python3-asteval python3-coverage \
       python3-pkg-resources python3-pycryptodome python3-pyelftools \
       python3-pytest python3-sphinxcontrib.apidoc python3-sphinx-rtd-theme \
-      python3-subunit python3-testtools python3-virtualenv swig
+      python3-subunit python3-testtools python3-virtualenv swig uuid-dev
 
 SUSE based
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