graphql: Add -backend suffix to the plugin directory

plugins/graphql is a backend plugin published at @backstage/plugin-graphql-backend
When exploring the repository, I got confused to find only plugins/graphql since backend plugins are supposed to have the -backend suffix

Signed-off-by: Himanshu Mishra <himanshu@orkohunter.net>

plugins/graphql-backend/CHANGELOG.md

@@ -0,0 +1,94 @@
+# @backstage/plugin-graphql-backend
+
+## 0.1.9
+
+### Patch Changes
+
+- Updated dependencies
+  - @backstage/backend-common@0.9.0
+  - @backstage/config@0.1.8
+  - @backstage/plugin-catalog-graphql@0.2.12
+
+## 0.1.8
+
+### Patch Changes
+
+- Updated dependencies [3be844496]
+- Updated dependencies [22fd8ce2a]
+- Updated dependencies [f9fb4a205]
+  - @backstage/plugin-catalog-graphql@0.2.9
+  - @backstage/backend-common@0.8.0
+
+## 0.1.7
+
+### Patch Changes
+
+- Updated dependencies [e0bfd3d44]
+- Updated dependencies [38ca05168]
+- Updated dependencies [d8b81fd28]
+  - @backstage/backend-common@0.7.0
+  - @backstage/config@0.1.5
+  - @backstage/plugin-catalog-graphql@0.2.8
+
+## 0.1.6
+
+### Patch Changes
+
+- Updated dependencies [8686eb38c]
+- Updated dependencies [0434853a5]
+- Updated dependencies [8686eb38c]
+  - @backstage/backend-common@0.6.0
+  - @backstage/config@0.1.4
+  - @backstage/plugin-catalog-graphql@0.2.7
+
+## 0.1.5
+
+### Patch Changes
+
+- Updated dependencies [0b135e7e0]
+- Updated dependencies [294a70cab]
+- Updated dependencies [0ea032763]
+- Updated dependencies [5345a1f98]
+- Updated dependencies [09a370426]
+  - @backstage/backend-common@0.5.0
+  - @backstage/plugin-catalog-graphql@0.2.6
+
+## 0.1.4
+
+### Patch Changes
+
+- Updated dependencies [38e24db00]
+- Updated dependencies [e3bd9fc2f]
+- Updated dependencies [12bbd748c]
+- Updated dependencies [e3bd9fc2f]
+  - @backstage/backend-common@0.4.0
+  - @backstage/config@0.1.2
+  - @backstage/plugin-catalog-graphql@0.2.4
+
+## 0.1.3
+
+### Patch Changes
+
+- Updated dependencies [1722cb53c]
+- Updated dependencies [1722cb53c]
+- Updated dependencies [7b37e6834]
+- Updated dependencies [8e2effb53]
+  - @backstage/backend-common@0.3.0
+  - @backstage/plugin-catalog-graphql@0.2.1
+
+## 0.1.2
+
+### Patch Changes
+
+- Updated dependencies [28edd7d29]
+- Updated dependencies [5249594c5]
+- Updated dependencies [56e4eb589]
+- Updated dependencies [e37c0a005]
+- Updated dependencies [f00ca3cb8]
+- Updated dependencies [6579769df]
+- Updated dependencies [8c2b76e45]
+- Updated dependencies [440a17b39]
+- Updated dependencies [8afce088a]
+- Updated dependencies [7bbeb049f]
+  - @backstage/plugin-catalog-graphql@0.2.0
+  - @backstage/backend-common@0.2.0