Update CITATION.cff

Signed-off-by: Ruslan Senatorov <55090151+ruslansenatorov@users.noreply.github.com>

Author: ruslansenatorov

CITATION.cff

@@ -1,15 +1,15 @@
 cff-version: 1.2.0
 message: "If you use this project in research or academic work, please cite it using the information below."
 
-title: "Normal Equations Solver for Simple Linear Regression"
+title: "conjugate-gradient-sparse-cg-solver-course"
 
 version: "0.1.0"
 
-doi: "10.5281/zenodo.18818738"
+doi: ""
 
 date-released: "2026-03-01"
 
-repository-code: "https://github.com/USERNAME/Normal-equations-solver-simple-linear-regression"
+repository-code: "https://github.com/SENATOROVAI/conjugate-gradient-sparse-cg-solver-course"
 
 license: MIT
 
@@ -22,27 +22,26 @@ authors:
 
 keywords:
   - optimization
-  - Normal Equations
+  - conjugate gradient
   - numerical-optimization
   - large-scale-optimization
   - machine-learning
-  - Simple Linear Regression
 
 abstract: >
   This project provides a mathematically rigorous treatment and
-  production-style implementation of the Normal Equations
+  production-style implementation of the conjugate gradient
   optimization algorithm, including theoretical derivation,
   convergence analysis, and numerical experiments.
 
 preferred-citation:
   type: report
-  doi: "10.5281/zenodo.18818738"
-  title: "L-BFGS Solver Course"
+  doi: ""
+  title: "conjugate-gradient-sparse-cg-solver-course"
   authors:
     - family-names: "Senatorov"
       given-names: "Ruslan"
   year: 2026
-  repository-code: "https://github.com/USERNAME/Normal-equations-solver-simple-linear-regression"
+  repository-code: "https://github.com/senatorovai/conjugate-gradient-sparse-cg-solver-course"