remove extra space (#865)

Author: jarededwards

docs/common/partials/common/_prerequisites-linux.mdx

@@ -1,7 +1,7 @@
 You can download the latest build for your architecture from the [releases page](https://github.com/kubefirst/kubefirst/releases). Once done, extract it, and ensure it's executable. You may need to use `sudo` for the `tar` or `chmod`` command.
 
 ```shell
-tar --overwrite -xvf kubefirst_<VERSION>_linux_<ARCH>.tar.gz -C /usr/local/bin/ kubefirst && \
+tar --overwrite -xvf kubefirst_<VERSION>_linux_<ARCH>.tar.gz -C /usr/local/bin/kubefirst && \
 chmod +x /usr/local/bin/kubefirst
 ```