replaced cookbook 6 with upcoming 7

docs/index.md

@@ -1,6 +1,6 @@
 # What is this book about ?
 
-Hi, welcome and thank you for your interest in my Zabbix book. I wrote the [Zabbix cookbook](https://www.packtpub.com/product/zabbix-cookbook/9781784397586) and co wrote with Richards [Zabbix 4 Network Monitoring](https://www.packtpub.com/product/zabbix-4-network-monitoring-third-edition/9781789340266) a few years ago for PackPub. The cookbook the first of it's kind probably outdated and replaced by the [Zabbix 6 IT Infrastructure Monitoring Cookbook](https://www.packtpub.com/product/zabbix-6-it-infrastructure-monitoring-cookbook-second-edition/9781803246918), written by Brian and Nathan 2 people I like a lot to work with and can higly recommend. There are many more books available from Packt about Zabbix a complete overview can be found here [Zabbix books at pack](https://www.packtpub.com/search?query=zabbix). Or if you like to find some non English books Amazon has some books form Packt and other Publishers in Chinese, Spanish and maybe some other langueages as well. [Other boooks](https://www.amazon.com/s?k=zabbix&crid=3G0JRTVTKS7YU&sprefix=zabbix+%2Caps%2C167&ref=nb_sb_noss_2)
+Hi, welcome and thank you for your interest in my Zabbix book. I wrote the [Zabbix cookbook](https://www.packtpub.com/product/zabbix-cookbook/9781784397586) and co wrote with Richards [Zabbix 4 Network Monitoring](https://www.packtpub.com/product/zabbix-4-network-monitoring-third-edition/9781789340266) a few years ago for PackPub. The cookbook the first of it's kind probably outdated and will be replaced by the [Zabbix 7 IT Infrastructure Monitoring Cookbook](https://www.packtpub.com/product/zabbix-7-it-infrastructure-monitoring-cookbook-third-edition/9781801078320), written by Brian and Nathan 2 people I like a lot to work with and can higly recommend. There are many more books available from Packt about Zabbix a complete overview can be found here [Zabbix books at pack](https://www.packtpub.com/search?query=zabbix). Or if you like to find some non English books Amazon has some books form Packt and other Publishers in Chinese, Spanish and maybe some other langueages as well. [Other boooks](https://www.amazon.com/s?k=zabbix&crid=3G0JRTVTKS7YU&sprefix=zabbix+%2Caps%2C167&ref=nb_sb_noss_2)
 
 As Zabbix is an opensource product and making money out of the books was never my intention, it got me thinking how to do things different.
 How to make a new book without using a publisher like I had done before.