Add common plugin dependencies to getting started docs (#510)

* Add extra plugin dependencies

I found on a fresh Ubuntu install test that it pays to have unzip and curl installed for some of the asdf plugins to install properly so it seems to make sense adding these here to give a nicer getting started experience.

I do not have brew or spack handy to test but from what I can see these packages should exist.

* Update core-manage-asdf-vm.md

docs/core-manage-asdf-vm.md

@@ -108,15 +108,17 @@ Installation via Homebrew:
 ```shell
 brew install \
   coreutils automake autoconf openssl \
-  libyaml readline libxslt libtool unixodbc
+  libyaml readline libxslt libtool unixodbc \
+  unzip curl
 ```
 
 Installation via Spack:
 
 ```shell
 spack install \
   coreutils automake autoconf openssl \
-  libyaml readline libxslt libtool unixodbc
+  libyaml readline libxslt libtool unixodbc \
+  unzip curl
 ```
 
 #### ** Ubuntu **
@@ -125,7 +127,8 @@ spack install \
 sudo apt install \
   automake autoconf libreadline-dev \
   libncurses-dev libssl-dev libyaml-dev \
-  libxslt-dev libffi-dev libtool unixodbc-dev
+  libxslt-dev libffi-dev libtool unixodbc-dev \
+  unzip curl
 ```
 
 #### **Fedora**
@@ -134,7 +137,8 @@ sudo apt install \
 sudo dnf install \
   automake autoconf readline-devel \
   ncurses-devel openssl-devel libyaml-devel \
-  libxslt-devel libffi-devel libtool unixODBC-devel
+  libxslt-devel libffi-devel libtool unixODBC-devel \
+  unzip curl
 ```
 
 <!-- tabs:end -->