docs: changes from review comments

docs/contributing/contributing-a-benchmark.md

@@ -20,10 +20,11 @@ and return a `TrialValue` object. If your problem requires additional methods, y
 them in your class. For example, you might need a method to load data for your problem. 
 
 
-3. **Requirements file**: Create a requirements file under 
-   `container_recipes/benchmarks/my_benchmark/my_benchmark_requirements.txt` and add the 
-   requirements for your benchmark. Please specify exact versions of all requirements! 
-   This is very important for reproducibility.
+3. **Requirements file**: Create a requirements file and add the requirements for your benchmark. 
+   The file structure must be 
+   `container_recipes/benchmarks/<benchmark_id>/<benchmark_id>_requirements.txt`, so for example,
+   `container_recipes/benchmarks/my_benchmark/my_benchmark_requirements.txt`. Please specify exact 
+   versions of all requirements! This is very important for reproducibility.
 
 
 4. **Config files**: Add config files for the different benchmarking tasks under 

docs/contributing/contributing-an-optimizer.md

@@ -25,10 +25,11 @@ queries a new trial to evaluate from the optimizer and returns it as a TrialInfo
 the trial. If your optimizer requires additional methods, you can implement them in your class. 
 
 
-3. **Requirements file**: Create a requirements file under 
-   `container_recipes/optimizers/my_optimizer/my_optimizer_requirements.txt` and add the 
-   requirements for your optimizer. Please specify exact versions of all requirements! 
-   This is very important for reproducibility.
+3. **Requirements file**: Create a requirements file and add the requirements for your optimizer.
+   The file structure must be 
+   `container_recipes/optimizers/<optimizer_container_id>/<optimizer_container_id>_requirements.txt`,
+   so for example, `container_recipes/optimizers/my_optimizer/my_optimizer_requirements.txt`.
+   Please specify exact versions of all requirements! This is very important for reproducibility.
 
 
 4. **Config files**: Add config files for the different optimizers under 

docs/installation.md

@@ -27,9 +27,20 @@ pip install -r container_recipes/optimizers/SMAC3/SMAC3_requirements.txt
 pip install -r container_recipes/benchmarks/BBOB/BBOB_requirements.txt
 ```
 
-For some benchmarks, it might additionally be necessary to download data, 
-such as surrogate models, in order to run the benchmark. For example for YAHPO, you can
-download the surrogate benchmarks with
-```bash
-mkdir data; cd data; git clone https://github.com/slds-lmu/yahpo_data
-```
+For some benchmarks, it is additionally necessary to download data, 
+such as surrogate models, in order to run the benchmark: 
+
+-   For HPOB, you can download the surrogate benchmarks with
+    ```bash
+    bash container_recipes/benchmarks/HPOB/download_data.sh
+    ```
+
+-   For MFPBench, you can download the surrogate benchmarks with
+    ```bash
+    bash container_recipes/benchmarks/MFPBench/download_data.sh
+    ```
+
+-   For YAHPO, you can download the required surrogate benchmarks and meta-data with
+    ```bash
+    bash container_recipes/benchmarks/YAHPO/prepare_yahpo.sh
+    ```