highlighter: pygments
markdown: kramdown
gems:
  - jekyll-redirect-from

# For some reason kramdown seems to behave differently on different
# OS/packages wrt encoding. So we hard code this config.
kramdown:
  entity_output: numeric

include:
  - _static
  - _modules

# These allow the documentation to be updated with newer releases
# of Spark, Scala, and Mesos.
SPARK_VERSION: 2.5.0-SNAPSHOT
SPARK_VERSION_SHORT: 2.5.0
SCALA_BINARY_VERSION: "2.11"
SCALA_VERSION: "2.11.8"
MESOS_VERSION: 1.0.0
SPARK_ISSUE_TRACKER_URL: https://issues.apache.org/jira/browse/SPARK
SPARK_GITHUB_URL: https://github.com/apache/spark

highlighter: pygments
markdown: kramdown
gems:
  - jekyll-redirect-from

# For some reason kramdown seems to behave differently on different
# OS/packages wrt encoding. So we hard code this config.
kramdown:
  entity_output: numeric

include:
  - _static
  - _modules

# These allow the documentation to be updated with newer releases
# of Spark, Scala, and Mesos.
SPARK_VERSION: 2.5.0-SNAPSHOT
SPARK_VERSION_SHORT: 2.5.0
SCALA_BINARY_VERSION: "2.11"
SCALA_VERSION: "2.11.12"
MESOS_VERSION: 1.0.0
SPARK_ISSUE_TRACKER_URL: https://issues.apache.org/jira/browse/SPARK
SPARK_GITHUB_URL: https://github.com/apache/spark

Update docs to show Scala 2.11.12
[SPARK-24418][FOLLOWUP][DOC] Update docs to show Scala 2.11.12

## What changes were proposed in this pull request?

SPARK-24418 upgrades Scala to 2.11.12. This PR updates Scala version in docs.

- https://spark.apache.org/docs/latest/quick-start.html#self-contained-applications (screenshot)
![screen1](https://user-images.githubusercontent.com/9700541/45590509-9c5f0400-b8ee-11e8-9293-e48d297db894.png)

- https://spark.apache.org/docs/latest/rdd-programming-guide.html#working-with-key-value-pairs (Scala, Java)
(These are hyperlink updates)

- https://spark.apache.org/docs/latest/streaming-flume-integration.html#configuring-flume-1 (screenshot)
![screen2](https://user-images.githubusercontent.com/9700541/45590511-a123b800-b8ee-11e8-97a5-b7f2288229c2.png)

## How was this patch tested?

Manual.
```bash
$ cd docs
$ SKIP_API=1 jekyll build
```

Closes #22431 from dongjoon-hyun/SPARK-24418.

Authored-by: Dongjoon Hyun <6ff48b33cbb828151035af58a92f18a39f1d1036@apache.org>
Signed-off-by: DB Tsai <0430fe8116355e2ecfa7f2b79341c5ad5a243c66@apple.com>
