doc: fix code style + fix missing extension in pull script

Author: jeremyfix

.d4g-tools/deploy/pull/readme.md

@@ -1,13 +1,15 @@
 # Install gum
+
+```
 sudo mkdir -p /etc/apt/keyrings
 curl -fsSL https://repo.charm.sh/apt/gpg.key | sudo gpg --dearmor -o /etc/apt/keyrings/charm.gpg
 echo "deb [signed-by=/etc/apt/keyrings/charm.gpg] https://repo.charm.sh/apt/ * *" | sudo tee /etc/apt/sources.list.d/charm.list
 sudo apt update && sudo apt install gum
-
+```
 
 # Content of cron file on sytem:
 
 
 ```bash
-* * * * * /opt/d4g/<MY_REPO>/.d4g-tools/deploy/pull/pull_cron --github-token=<REDACTED> --repository-name=dataforgoodfr/<MY_REPO> --branch=dev >> /tmp/log/pull_cron.log 2>&1
+* * * * * /opt/d4g/<MY_REPO>/.d4g-tools/deploy/pull/pull_cron.sh --github-token=<REDACTED> --repository-name=dataforgoodfr/<MY_REPO> --branch=dev >> /tmp/log/pull_cron.log 2>&1
 ```