Update CITATION title to say C99

CITATION.cff

@@ -0,0 +1,18 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite it as below."
+title: "Genann: simple neural network library in C99"
+authors:
+  - family-names: "Van Winkle"
+    given-names: "Lewis"
+license: Zlib
+doi: 10.5281/zenodo.21816910
+repository-code: "https://github.com/codeplea/genann"
+url: "https://codeplea.com/genann"
+keywords:
+  - neural-network
+  - ann
+  - backpropagation
+  - feedforward-neural-network
+  - c
+version: 1.1.0
+date-released: 2026-08-06

README.md

@@ -3,6 +3,7 @@
 # Genann
 
 [![CI](https://github.com/codeplea/genann/actions/workflows/ci.yml/badge.svg?branch=master)](https://github.com/codeplea/genann/actions/workflows/ci.yml)
+[![DOI](https://zenodo.org/badge/51344685.svg)](https://doi.org/10.5281/zenodo.21816910)
 
 Genann is a minimal, well-tested library for training and using feedforward
 artificial neural networks (ANN) in C. Its primary focus is on being simple,