Fix typo for documentation

site/src/site/sphinx/en/advanced-use.md

@@ -54,7 +54,7 @@ Arthas provides `pipe` to process the result returned from commands further, e.g
 
 ## async in background
 
-[async](async.md) can be handy when a problem is hardly to reproduce in the production enviornment, e.g. one `watch` condition may happen only once in one single day.
+[async](async.md) can be handy when a problem is hardly to reproduce in the production environment, e.g. one `watch` condition may happen only once in one single day.
 
 * job control - use `>` to redirect result into the log file, use `&` to put the job to the background. Job keeps running even if the session is disconnected (the session lifecycle is 1 day by default)
 * jobs - list all jobs

site/src/site/sphinx/en/async.md

@@ -34,7 +34,7 @@ You can see that there is currently a background job executing.
 * execution count is the number of executions, which have been executed 19 times since the start.
 * timeout date: After this time, the job will automatically timeout and exit.
 
-## 3. Suspend and Cannel job
+## 3. Suspend and Cancel job
 
 When the job is executing in the foreground, such as directly calling the command `trace Test t` or calling the background job command `trace Test t &`, the job is transferred to the foreground through the `fg` command. At this point, the console cannot continue to execute the command, but can receive and process the following keyboard events:
 
@@ -80,4 +80,4 @@ If you want to stop background job, just `kill <job-id>`.
 ## 7. Others
 
 * Support up to 8 commands at the same time redirect the output to the log file.
-* Do not open too many background asynchronous commands at the same time to avoid affecting the performance of the target JVM.
+* Do not open too many background asynchronous commands at the same time to avoid affecting the performance of the target JVM.

site/src/site/sphinx/en/classloader.md

@@ -3,7 +3,7 @@ classloader
 
 Check the inheritance tree, urls and classes loading profiles of the class loaders.
 
-It can be a great help for `ResourceNotFoundException` when you can use command `classloader`to specify a class loader to `getResources` and print all the urls of the valid resources.
+It can be a great help for `ResourceNotFoundException` when you can use command `classloader` to specify a class loader to `getResources` and print all the urls of the valid resources.
 
 ### Options
 

site/src/site/sphinx/en/quick-start.md

@@ -95,7 +95,7 @@ public class Demo {
 
 ### Windows
 
-Open the *DOS* console, under the unzipped arthas folder execture `as.bat <pid>`
+Open the *DOS* console, under the unzipped arthas folder execute `as.bat <pid>`
 
 
 ## 3. Check the Dashboard

site/src/site/sphinx/en/release-notes.md

@@ -38,7 +38,7 @@ v2017-09-11
 v2017-05-11
 ----
 
-* [improvement] [`tt`](tt.md) investigating/recording level one to avoid too much performance overhea
+* [improvement] [`tt`](tt.md) investigating/recording level one to avoid too much performance overhead
 * [bug] fix Chinese characters can not be presented issue
 
 v2017-05-12

site/src/site/sphinx/en/trace.md

@@ -97,7 +97,7 @@ trace com.alibaba.sample.petstore.web.store.module.screen.ItemList execute #cost
         `---[min=0.005428ms,max=0.094064ms,total=0.105228ms,count=3] com.alibaba.citrus.turbine.Context:put()
 ```
 
-Only the calling trace of the time cost higher than `4ms`presented now.
+Only the calling trace of the time cost higher than `4ms` presented now.
 
 F.Y.I
 1. like JProfile and other similar commercial software, you can `trace` down the specified method calling stack with time cost in Arthas;