More spelling and consistency

bin/varnishtest/vtc_misc.c

@@ -101,7 +101,7 @@ cmd_varnishtest(CMD_ARGS)
 /* SECTION: shell shell
  *
  * Pass the string given as argument to a shell. If you have multiple
- * commands to run, you can use curly barces to describe a multi-lines
+ * commands to run, you can use curly brackets to describe a multi-lines
  * script, eg::
  *
  *         shell {

doc/sphinx/users-guide/vcl-syntax.rst

@@ -3,7 +3,7 @@ VCL Syntax
 
 VCL has inherited a lot from C and it reads much like simple C or Perl.
 
-Blocks are delimited by curly braces, statements end with semicolons,
+Blocks are delimited by curly brackets, statements end with semicolons,
 and comments may be written as in C, C++ or Perl according to your own
 preferences.