fix type category table on hip 1

HIP/hip-1.md

@@ -225,23 +225,25 @@ HIPs should be written in markdown format. There is a template to follow.
 
 Each HIP must begin with a header preamble in a table format. The headers must appear in the following order. Headers marked with "*" are optional and are described below. All other headers are required.
 
-- hip: HIP number (this is determined by the PR number and set by the editor)
-- title: HIP title
-- author: a list of the author's or authors' name(s) and/or username(s), or name(s) and email(s)
-- working-group\*: a list of the technical and business stakeholders' name(s) and/or username(s), or name(s) and email(s)
-- requested-by: the name(s) and/or username(s), or name(s) and email(s) of the individual(s) or project(s) requesting the HIP
-- type: Standards Track | Informational | Process
-- category\*: Core | Service | API | Mirror | Application
-- needs-tsc-approval: Yes | No
-- status: Draft | Withdrawn | Review | Stagnant | Deferred | Last Call | Accepted | Rejected | Final | Active | Replaced
-- created: date created on
-- last-call-date-time: the anticipated date and time when this HIP will change status to `Last Call`, filled out by the editor
-- discussions-to: a URL pointing to the official discussion thread
-- updated\*: comma-separated list of dates
-- requires\*: HIP number(s)
-- replaces\*: HIP number(s)
-- superseded-by\*: HIP number(s)
-- release\*: release version of implementation
+| Field | Description |
+|-------|-------------|
+| hip | HIP number (determined by PR number and set by editor) |
+| title | HIP title |  
+| author | List of authors' names/usernames or names/emails |
+| working-group* | List of stakeholders' names/usernames or names/emails |
+| requested-by | Names/usernames or names/emails of requesters |
+| type | Standards Track, Informational, or Process |
+| category* | Core, Service, API, Mirror, or Application |
+| needs-tsc-approval | Yes or No |
+| status | Current status |
+| created | Creation date |
+| last-call-date-time | Expected Last Call status date/time |
+| discussions-to | URL of discussion thread |
+| updated* | Comma-separated dates list |  
+| requires* | Required HIP numbers |
+| replaces* | Replaced HIP numbers |
+| superseded-by* | Superseding HIP numbers |
+| release* | Implementation version |
 
 Headers that permit lists must separate elements with commas.