rename distro_check to package_manager_detect, as it is more in keeping with what the function actually does

Signed-off-by: Adam Warner <me@adamwarner.co.uk>

automated install/basic-install.sh

@@ -276,7 +276,7 @@ os_check() {
 }
 
 # Compatibility
-distro_check() {
+package_manager_detect() {
 # If apt-get is installed, then we know it's part of the Debian family
 if is_command apt-get ; then
     # Set some global variables here
@@ -1950,7 +1950,7 @@ installLogrotate() {
     if [[ -f ${target} ]]; then
         printf "\\n\\t%b Existing logrotate file found. No changes made.\\n" "${INFO}"
         # Return value isn't that important, using 2 to indicate that it's not a fatal error but
-        # the function did not complete. 
+        # the function did not complete.
         return 2
     fi
     # Copy the file over from the local repo
@@ -2643,7 +2643,7 @@ main() {
     fi
 
     # Check for supported distribution
-    distro_check
+    package_manager_detect
 
     # If the setup variable file exists,
     if [[ -f "${setupVars}" ]]; then

automated install/uninstall.sh

@@ -42,8 +42,8 @@ source "${PI_HOLE_FILES_DIR}/automated install/basic-install.sh"
 # setupVars set in basic-install.sh
 source "${setupVars}"
 
-# distro_check() sourced from basic-install.sh
-distro_check
+# package_manager_detect() sourced from basic-install.sh
+package_manager_detect
 
 # Install packages used by the Pi-hole
 DEPS=("${INSTALLER_DEPS[@]}" "${PIHOLE_DEPS[@]}")
@@ -113,7 +113,7 @@ removeNoPurge() {
         fi
     fi
     echo -e "${OVER}  ${TICK} Removed Web Interface"
- 
+
     # Attempt to preserve backwards compatibility with older versions
     # to guarantee no additional changes were made to /etc/crontab after
     # the installation of pihole, /etc/crontab.pihole should be permanently