Change comments in line protocol syntax to be self-descriptive #

[maximal]

I suppose, the current

// Syntax
<measurement>[,<tag_key>=<tag_value>[,<tag_key>=<tag_value>]] <field_key>=<field_value>[,<field_key>=<field_value>] [<timestamp>]

// Example
myMeasurement,tag1=value1,tag2=value2 fieldKey="fieldValue" 1556813561098000000

can confuse new users by implying that // can be used to comment lines in the line protocol itself.

So, I propose to change this snippet to

# Syntax
<measurement>[,<tag_key>=<tag_value>[,<tag_key>=<tag_value>]] <field_key>=<field_value>[,<field_key>=<field_value>] [<timestamp>]

# Example
myMeasurement,tag1=value1,tag2=value2 fieldKey="fieldValue" 1556813561098000000

and use some #-comment language descriptor in the Markdown code block (like Python).