Update README.md

Author: RaphaelS1

README.md

@@ -44,3 +44,14 @@ Survival analysis interface in Julia, still very experimental. Tries to build on
 * [ ] [mlr3proba integration](https://github.com/RaphaelS1/SurvivalAnalysis.jl/issues/21)
 * [ ] [MLJ integration](https://github.com/RaphaelS1/SurvivalAnalysis.jl/issues/22)
 * [ ] [Documentation](https://github.com/RaphaelS1/SurvivalAnalysis.jl/issues/9)
+
+## Contributors
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
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