Update .md files #657

Reference: #657
Signed-off-by: johnmhoran <johnmhoran@gmail.com>

Author: johnmhoran

docs/known-qualifiers.md

@@ -32,8 +32,6 @@ all package types:
   Python pip or the SPDX specification. See
   https://github.com/spdx/spdx-spec/blob/cfa1b9d08903/chapters/3-package-information.md#37-package-download-location
 
-  - TODO: incorporate the details from SPDX here.
-
 - `file_name` is an extra file name of a package archive.
 
 - `checksum` is a qualifier for one or more checksums stored as a

docs/standard/types.md

@@ -3,27 +3,23 @@
 Each package manager, platform, type, or ecosystem has its own conventions
 and protocols to identify, locate, and provision software packages.
 
-The package **type** is the component of a Package-URL that is used to
+The package `type` is the component of a Package-URL that is used to
 capture this information with a short string such as `maven`, `npm`,
 `nuget`, `gem`, `pypi`, etc.
 
-These are registered PURL package type definitions.
+PURL type definitions are maintained in a set of JSON Schema files with a
+separate file for each `purl` `type`. Each `purl` `type` has a corresponding
+file of automatically generated documentation. There is also a simple index
+of all currently registered purl types.
 
-Definitions can also include types reserved for future use.
+## Where to find PURL type information
 
-This document no longer contains a manually maintained list of PURL types.
-
-Instead, all PURL type definitions are now maintained in a simple JSON
-document with automatically generated documentation.
-
-## Where to find PURL Type information
-
-- In the JSON Index listing of all defined PURL types at:
-  https://github.com/package-url/purl-spec/tree/main/purl-types-index.json
-
-- In individual JSON files, one for each PURL type definition at:
+- In individual JSON files, one for each `purl` `type` definition at:
   https://github.com/package-url/purl-spec/tree/main/types
 
-- As Markdown documentation, generated from for each PURL type JSON
+- As Markdown documentation, generated from each `purl` `type` JSON
   definition at:
   https://github.com/package-url/purl-spec/tree/main/types-doc
+
+- In the JSON Index listing of all registered PURL types at:
+  https://github.com/package-url/purl-spec/tree/main/purl-types-index.json