RFR: 7052: The link to BellSoft LMC should be updated

[Denis Kononenko]

Updated link to BellSoft LMC.

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Commit messages:
 - Update README.md

Changes: https://git.openjdk.java.net/jmc/pull/179/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=179&range=00
  Issue: https://bugs.openjdk.java.net/browse/JMC-7052
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jmc/pull/179.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/179/head:pull/179

PR: https://git.openjdk.java.net/jmc/pull/179