f454d5287f
## What changes were proposed in this pull request?
Put annotation args in one line, or API doc generation will fail.
~~~
[error] /Users/meng/src/spark/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/stringExpressions.scala:1559: annotation argument needs to be a constant; found: "_FUNC_(expr) - Returns the character length of string data or number of bytes of ".+("binary data. The length of string data includes the trailing spaces. The length of binary ").+("data includes binary zeros.")
[error] "binary data. The length of string data includes the trailing spaces. The length of binary " +
[error] ^
[info] No documentation generated with unsuccessful compiler run
[error] one error found
[error] (catalyst/compile:doc) Scaladoc generation failed
[error] Total time: 27 s, completed Aug 17, 2018 3:20:08 PM
~~~
## How was this patch tested?
sbt catalyst/compile:doc passed
Closes #22137 from mengxr/minor-doc-fix.
Authored-by: Xiangrui Meng <meng@databricks.com>
Signed-off-by: hyukjinkwon <gurwls223@apache.org>
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