[clang] [analyzer] Remove double spaces after sentence endings in emitted diagnostics (PR #228777)

[Benedek Kaibas via cfe-commits]

================
@@ -746,15 +746,15 @@ RefLeakReportVisitor::getEndPath(const ExplodedNode *EndN,
           os << "whose name ('" << MD->getSelector().getAsString()
              << "') does not start with "
                 "'copy', 'mutableCopy', 'alloc' or 'new'."
-                "  This violates the naming convention rules"
+                " This violates the naming convention rules"
----------------
benedekaibas wrote:

Applied changes here: [eab194a](https://github.com/llvm/llvm-project/pull/228777/commits/eab194a6340af227cdc7fd86c31c0b1808aeac80)

https://github.com/llvm/llvm-project/pull/228777