[EN] update Tightly Coupled Architecture (#2658)

Signed-off-by: Garima Negi <[email protected]>

Author: Garima-Negi

content/en/tightly-coupled-architectures.md renamed to content/en/tightly-coupled-architecture.md

@@ -1,5 +1,5 @@
 ---
-title: Tightly Coupled Architectures
+title: Tightly Coupled Architecture
 status: Completed
 category: Property
 tags: ["fundamental", "architecture", "property"]