RFR: JDK-8322248: Fix inconsistent wording in ElementFilter.typesIn

[Joe Darcy]

Correct small oversight made during the fix for

    JDK-8257638: Update usage of "type" terminology in javax.lang.model

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Commit messages:
 - JDK-8322248: Fix inconsistent wording in ElementFilter.typesIn

Changes: https://git.openjdk.org/jdk/pull/17231/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17231&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8322248
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/17231.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17231/head:pull/17231

PR: https://git.openjdk.org/jdk/pull/17231