Bad operation when there is a newline character between annotations

[mariusz-4chain]

Describe the bug
Bad operation when there is a newline character between annotations

To Reproduce
Steps to reproduce the behavior:

1. Add a couple of annotations describing the endpoint
2. Enter a newline character between the annotations e.g.:
   // @router /v1/transaction/record [post]

// @Security x-auth-xpub
4. Documentation won't be generated or @tags information is ignored and endpoint is assigned to default tag

Expected behavior
If the newline character is not allowed the plugin should throw an error and not silently ignore it.

Screenshots

Your swag version
e.g. 1.16.3

Your go version
go1.22.4 linux/amd64

Desktop (please complete the following information):

• OS: Linux Mint 21.3
• Browser: Chrome
• 126