RFR: Cleaned up the noreg table

[Jesper Wilhelmsson]

Added link targets for all noreg-labels.

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Commit messages:
 - Cleaned up the noreg table

Changes: https://git.openjdk.java.net/guide/pull/7/files
 Webrev: https://webrevs.openjdk.java.net/guide/7/webrev.00
  Stats: 19 lines in 1 file changed: 0 ins; 0 del; 19 mod
  Patch: https://git.openjdk.java.net/guide/pull/7.diff
  Fetch: git fetch https://git.openjdk.java.net/guide pull/7/head:pull/7

PR: https://git.openjdk.java.net/guide/pull/7