Change link for reporting Semeru Issues

- Also use product family name IBM Semeru Runtimes (plural)
  when not specifically speaking about the Open Edition version.

Signed-off-by: Adam Brousseau <[email protected]>

ibm-semeru-runtimes/README-short.txt

@@ -1 +1 @@
-IBM Semeru Runtime Official Images for OpenJDK and Eclipse OpenJ9 binaries.
+IBM Semeru Runtimes Official Images for OpenJDK and Eclipse OpenJ9 binaries.

ibm-semeru-runtimes/issues.md

@@ -1 +1 @@
-[GitHub](%%GITHUB-REPO%%/issues); The [IBM Semeru Runtime support](https://ibm.com/semeru-runtimes) page has more information on quality, roadmap and other details for IBM Semeru Runtime Open Edition builds;
+[GitHub](https://github.com/ibmruntimes/Semeru-Runtimes/issues); The [IBM Semeru Runtimes support](https://ibm.com/semeru-runtimes) page has more information on quality, roadmap and other details for IBM Semeru Runtime Open Edition builds;

ibm-semeru-runtimes/maintainer.md

@@ -1 +1 @@
-[IBM Semeru Runtime](%%GITHUB-REPO%%)
+[IBM Semeru Runtimes](%%GITHUB-REPO%%)