This is what happens when outside websites copy work/guides from XDA and directly link to files without explaining what they are.
The kernel with CWM recovery linked to in the guide you followed is for a specific (very old) firmware version. That is most probably the reason for your bootloop.
Get the correct kernel for your current firmware version here
and follow the instructions to flash it via fastboot.
In future, I suggest you search for and follow guides from XDA only, as guides on other websites almost certainly originated here anyway and are kept up to date only on XDA.
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