docs/commands - update options to match those listed in command help output

website/source/docs/commands/build.html.md

@@ -49,3 +49,8 @@ that are created will be outputted at the end of the build.
 
 -   `-parallel=false` - Disable parallelization of multiple builders (on by
     default).
+
+-   `-var` - Set a variable in your packer template. This option can be used
+    multiple times. This is useful for setting version numbers for your build.
+
+-   `-var-file` - Set template variables from a file.

website/source/docs/commands/fix.html.md

@@ -35,3 +35,7 @@ human readability.
 
 The full list of fixes that the fix command performs is visible in the help
 output, which can be seen via `packer fix -h`.
+
+## Options
+
+-   `-validate=false` - Disables validation of the fixed template. True by default.

website/source/docs/commands/validate.html.md

@@ -32,3 +32,16 @@ Errors validating build 'vmware'. 1 error(s) occurred:
 
 -   `-syntax-only` - Only the syntax of the template is checked. The configuration
     is not validated.
+
+-   `-except=foo,bar,baz` - Builds all the builds except those with the given
+    comma-separated names. Build names by default are the names of their builders,
+    unless a specific `name` attribute is specified within the configuration.
+
+-   `-only=foo,bar,baz` - Only build the builds with the given comma-separated
+    names. Build names by default are the names of their builders, unless a
+    specific `name` attribute is specified within the configuration.
+
+-   `-var` - Set a variable in your packer template. This option can be used
+    multiple times. This is useful for setting version numbers for your build.
+
+-   `-var-file` - Set template variables from a file.