Update _index.md

Author: volodya-melnyk

content/influxdb/v2/install/_index.md

@@ -355,9 +355,9 @@ To install {{% product-name %}} on Linux, do one of the following:
    echo "943666881a1b8d9b849b74caebf02d3465d6beb716510d86a39f6c8e8dac7515  influxdata-archive.key" \
    | sha256sum --check - && cat influxdata-archive.key \
    | gpg --dearmor \
-   | tee /etc/apt/trusted.gpg.d/influxdata-archive.gpg > /dev/null \
+   | sudo tee /etc/apt/trusted.gpg.d/influxdata-archive.gpg > /dev/null \
    && echo 'deb [signed-by=/etc/apt/trusted.gpg.d/influxdata-archive.gpg] https://repos.influxdata.com/debian stable main' \
-   | tee /etc/apt/sources.list.d/influxdata.list
+   | sudo tee /etc/apt/sources.list.d/influxdata.list
    # Install influxdb
    sudo apt-get update && sudo apt-get install influxdb2
    ```