[Jekyll Plugin] Missing code format

[rachelcarmena]

Describe the bug

We're using Dokka 0.10.0 and outputFormat = 'jekyll' and the code is properly formatted with the use of the corresponding delimiters.

For instance:

# Monoid

`interface Monoid<A> : `[`Semigroup`](../-semigroup/index.html)`<A>`

However, dokkaJelyll task from Dokka 1.4.32 extracts code without delimiters.

For instance, the corresponding text for the same example as before:

# Monoid  
 [common] interface [Monoid](index.md)<[A](index.md)> : [Semigroup](../-semigroup/index.md)<[A](index.md)>

Expected behaviour

We'd expect the same behavior as before with Dokka 0.10.0:

# Monoid

`interface Monoid<A> : `[`Semigroup`](../-semigroup/index.html)`<A>`

to get code properly rendered.

To Reproduce

Repository: https://github.com/arrow-kt/arrow

Steps:

1. Generate the documentation with Dokka 0.10.0
2. Generate the documentation with Dokka 1.4.32
3. Compare both results

To Reproduce: Step 1 - Generate the documentation with Dokka 0.10.0

cd arrow-libs
./gradlew dokka

To Reproduce: Step 2 - Generate the documentation with Dokka 1.4.32

1. Remove dokka configuration in arrow-libs/gradle/apidoc-creation.gradle
2. Update arrow-libs/gradle.properties:

-DOKKA_VERSION=0.10.0
+DOKKA_VERSION=1.4.32

3. Run dokkaJekyll:

cd arrow-libs
./gradlew dokkaJekyll

To Reproduce: Step 3 - Compare both results

For instance, compare:

./arrow-site/docs/apidocs/arrow-core/arrow.typeclasses/-monoid/index.md  --- Dokka 0.10.0
./arrow-libs/core/arrow-core/build/dokka/jekyll/arrow-core/arrow.typeclasses/-monoid/index.md --- Dokka 1.4.32

Dokka configuration

Using the default options at the beginning.

Installation

• Operating system: macOS/Linux
• Build tool: Gradle v6.6.1
• Dokka version: 1.4.32

Additional context

We're trying to move from Dokka 0.10.0 to Dokka 1.4.32

Are you willing to provide a PR?

I'm willing to contribute if some guideline is provided. I just found the way to fix this thing #1968 so far.

[rachelcarmena]

Including .md files to show how the source code doesn't have the format delimiters with Dokka 1.4.32 (task dokkaJekyll):

• index.md generated by Dokka 0.10.0 (task dokka and outputFormat = 'jekyll')
• index.md generated by Dokka 1.4.32 (task dokkaJekyll)