Correcting reference link to templates folder

[amalkurup89]

Description:

Fixing the templates link to navigate correctly to templates section on the same page

Motivation:

Help future readers/users for better reference of Kong Documentation

[amalkurup89]

@shashiranjan84 Can you please review & approve accordingly

[amalkurup89]

@kikito Can you please review

[amalkurup89]

Can anyone with reviewer access, review this and merge these changes

[amalkurup89]

/assign @kikito

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