fix: use new docs links in install script

Author: jsjoeio

install.sh

@@ -2,7 +2,7 @@
 set -eu
 
 # code-server's automatic install script.
-# See https://github.com/cdr/code-server/blob/main/docs/install.md
+# See https://github.com/cdr/code-server/blob/main/docs/install
 
 usage() {
   arg0="$0"
@@ -67,7 +67,7 @@ Usage:
 
 It will cache all downloaded assets into ~/.cache/code-server
 
-More installation docs are at https://github.com/cdr/code-server/blob/main/docs/install.md
+More installation docs are at https://coder.com/docs/code-server/v3.10.2/install
 EOF
 }
 
@@ -430,7 +430,7 @@ install_npm() {
   echoh
   echoerr "Please install npm or yarn to install code-server!"
   echoerr "You will need at least node v12 and a few C dependencies."
-  echoerr "See the docs https://github.com/cdr/code-server/blob/v3.10.2/docs/install.md#yarn-npm"
+  echoerr "See the docs https://coder.com/docs/code-server/v3.10.2/install#yarn-npm"
   exit 1
 }
 
@@ -484,11 +484,6 @@ distro() {
     )
     return
   fi
-
-  if [ -f /etc/alpine-release ]; then
-    echo "alpine"
-    return
-  fi
 }
 
 # os_name prints a pretty human readable name for the OS/Distro.