Match the Pi-hole brand (#1358)

* Update README.md

* Update index.php

* Update basic-install.sh

* Update piholeCheckout.sh

* Update update.sh

* Update CONTRIBUTING.md

* Update the Pi-hole brand tip in CONTRIBUTING.md

Use a better formulation.

* Update README.md 2

advanced/Scripts/piholeCheckout.sh

@@ -104,7 +104,7 @@ checkout()
 
   #This is unlikely
   if ! is_repo "${PI_HOLE_FILES_DIR}" ; then
-    echo "::: Critical Error: Core Pi-Hole repo is missing from system!"
+    echo "::: Critical Error: Core Pi-hole repo is missing from system!"
     echo "::: Please re-run install script from https://github.com/pi-hole/pi-hole"
     exit 1;
   fi

advanced/Scripts/update.sh

@@ -94,7 +94,7 @@ main() {
 
   #This is unlikely
   if ! is_repo "${PI_HOLE_FILES_DIR}" ; then
-    echo "::: Critical Error: Core Pi-Hole repo is missing from system!"
+    echo "::: Critical Error: Core Pi-hole repo is missing from system!"
     echo "::: Please re-run install script from https://github.com/pi-hole/pi-hole"
     exit 1;
   fi

advanced/index.php

@@ -1,5 +1,5 @@
 <?php
-/* Detailed Pi-Hole Block Page: Show "Website Blocked" if user browses to site, but not to image/file requests based on the work of WaLLy3K for DietPi & Pi-Hole */
+/* Detailed Pi-hole Block Page: Show "Website Blocked" if user browses to site, but not to image/file requests based on the work of WaLLy3K for DietPi & Pi-Hole */
 
 function validIP($address){
 	if (preg_match('/[.:0]/', $address) && !preg_match('/[1-9a-f]/', $address)) {
@@ -64,7 +64,7 @@ if (!$showPage)
 	die();
 }
 
-// Get Pi-Hole version
+// Get Pi-hole version
 $piHoleVersion = exec('cd /etc/.pihole/ && git describe --tags --abbrev=0');
 
 // Don't show the URI if it is the root directory