Fix typo.

FAQ.md

@@ -6,11 +6,11 @@ dubbo-admin has been moved from core repository to https://github.com/apache/inc
 
 Currently, dubbo keeps 3 versions evolve in parallel:
 
-* 2.7.x (master): requires Java 1.8, major feature branch
+* 2.7.x (master): requires Java 1.8, major feature branch.
 
 * 2.6.x: requires Java 1.6, minor feature & bugfix branch, GA, production ready.
 
-* 2.5.x: requires Java 1.6, maintainance branch, only accept security vulnerbility and critical bugfix, expected to be EOL soon
+* 2.5.x: requires Java 1.6, maintenance branch, only accept security vulnerability and critical bugfix, expected to be EOL soon.
 
 check [this](https://github.com/apache/incubator-dubbo/issues/1208) for detailed version management plan.
 
@@ -22,4 +22,4 @@ For committers, make sure select the right label and target branch for every PR,
 
 [Example question](https://github.com/alibaba/dubbo/issues/742)  
 
-Dubbo support to specify ip/port via system environment varialbles, examples can be found [here](https://github.com/dubbo/dubbo-samples/tree/master/dubbo-samples-docker).
+Dubbo support to specify ip/port via system environment variables, examples can be found [here](https://github.com/dubbo/dubbo-samples/tree/master/dubbo-samples-docker).