Correct since build value.
Correct since build value.

The latest plugin versions support only 2017.2 and 2017.3 builds but plugin.xml says that plugin supports 2017.1 as well.
This change fixes it.

Undin/intellij-rust,intellij-rust/intellij-rust,anton-okolelov/intellij-rust,Undin/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust,intellij-rust/intellij-rust,anton-okolelov/intellij-rust,anton-okolelov/intellij-rust,anton-okolelov/intellij-rust,intellij-rust/intellij-rust,Undin/intellij-rust,anton-okolelov/intellij-rust