fix: correct Bookstack version to 24.x

The previous release I had a typo in my `sed` expression which reverted to Bookstack version to 23.2.3.

Reported in #479

Author: rjhenry

README.md

@@ -67,8 +67,8 @@ Networking changed in Docker v1.9, so you need to do one of the following steps.
    ```bash
    docker run -d --link bookstack_db_:mysql \
    -p 8080:8080 \
-   --name bookstack_23.2.3 \
-   solidnerd/bookstack:23.2.3
+   --name bookstack_24.2.3 \
+   solidnerd/bookstack:24.2.3
    ```
 
 ### Docker 1.9+
@@ -101,8 +101,8 @@ Networking changed in Docker v1.9, so you need to do one of the following steps.
    -e DB_PASSWORD=secret \
    -e APP_URL=http://example.com \
    -p 8080:8080 \
-   --name="bookstack_23.2.3" \
-    solidnerd/bookstack:23.2.3
+   --name="bookstack_24.2.3" \
+    solidnerd/bookstack:24.2.3
    ```
 
     The APP_URL parameter should be the base URL for your BookStack instance without

VERSION

@@ -1 +1 @@
-23.2.3
+24.2.3

docker-compose.yml

@@ -11,7 +11,7 @@ services:
     - mysql-data:/var/lib/mysql
 
   bookstack:
-    image: solidnerd/bookstack:23.2.3
+    image: solidnerd/bookstack:24.2.3
     depends_on:
     - mysql
     environment: