corrected a few typos and expanded a few short-forms

docs/CodeConventions.txt

@@ -30,8 +30,8 @@ File Organization:
   - imports
   - javadoc comment
   - class or interface or enum definition
-  - static vars
-  - instance vars
+  - static variables
+  - instance variables
   - constructors
   - ruby declarations
   - getter and setter methods
@@ -50,7 +50,7 @@ Comments:
 
  Use plain english for all of your comments.
 
- Add only meanful javadoc comments (do not leave meanless IDE-generated
+ Add only meaningful javadoc comments (do not leave meaningless IDE-generated
  comments in your code). The first sentence shall sumarize the element's
  purpose but must not simply rephrase the element's name.  Add more
  sentences if you need to add further description and/or examples. Try
@@ -89,9 +89,9 @@ Statements:
 
  Use one statement per line.
 
- Use curlies {} always.  Put the { at the end of the line.  Put } always
+ Use curly braces {} always.  Put the { at the end of the line.  Put } always
  in a new line.  An else or catch or finally statement shall be put on the
- same line as the closing }.
+ same line as the closing }. 
 
  Do not use superfluous (), especially not with return.