Rename iid to IID for GraphQL issue mutations

app/graphql/mutations/issues/base.rb

@@ -11,7 +11,7 @@ module Mutations
 
       argument :iid, GraphQL::STRING_TYPE,
                required: true,
-               description: "The iid of the issue to mutate"
+               description: "The IID of the issue to mutate"
 
       field :issue,
             Types::IssueType,

doc/api/graphql/reference/gitlab_schema.graphql

@@ -6073,7 +6073,7 @@ input IssueSetConfidentialInput {
   confidential: Boolean!
 
   """
-  The iid of the issue to mutate
+  The IID of the issue to mutate
   """
   iid: String!
 
@@ -6118,7 +6118,7 @@ input IssueSetDueDateInput {
   dueDate: Time!
 
   """
-  The iid of the issue to mutate
+  The IID of the issue to mutate
   """
   iid: String!
 
@@ -6158,7 +6158,7 @@ input IssueSetIterationInput {
   clientMutationId: String
 
   """
-  The iid of the issue to mutate
+  The IID of the issue to mutate
   """
   iid: String!
 
@@ -6203,7 +6203,7 @@ input IssueSetLockedInput {
   clientMutationId: String
 
   """
-  The iid of the issue to mutate
+  The IID of the issue to mutate
   """
   iid: String!
 
@@ -6248,7 +6248,7 @@ input IssueSetWeightInput {
   clientMutationId: String
 
   """
-  The iid of the issue to mutate
+  The IID of the issue to mutate
   """
   iid: String!
 
@@ -13914,7 +13914,7 @@ input UpdateIssueInput {
   healthStatus: HealthStatus
 
   """
-  The iid of the issue to mutate
+  The IID of the issue to mutate
   """
   iid: String!
 

doc/api/graphql/reference/gitlab_schema.json

@@ -16764,7 +16764,7 @@
             },
             {
               "name": "iid",
-              "description": "The iid of the issue to mutate",
+              "description": "The IID of the issue to mutate",
               "type": {
                 "kind": "NON_NULL",
                 "name": null,
@@ -16894,7 +16894,7 @@
             },
             {
               "name": "iid",
-              "description": "The iid of the issue to mutate",
+              "description": "The IID of the issue to mutate",
               "type": {
                 "kind": "NON_NULL",
                 "name": null,
@@ -17024,7 +17024,7 @@
             },
             {
               "name": "iid",
-              "description": "The iid of the issue to mutate",
+              "description": "The IID of the issue to mutate",
               "type": {
                 "kind": "NON_NULL",
                 "name": null,
@@ -17150,7 +17150,7 @@
             },
             {
               "name": "iid",
-              "description": "The iid of the issue to mutate",
+              "description": "The IID of the issue to mutate",
               "type": {
                 "kind": "NON_NULL",
                 "name": null,
@@ -17280,7 +17280,7 @@
             },
             {
               "name": "iid",
-              "description": "The iid of the issue to mutate",
+              "description": "The IID of the issue to mutate",
               "type": {
                 "kind": "NON_NULL",
                 "name": null,
@@ -40992,7 +40992,7 @@
             },
             {
               "name": "iid",
-              "description": "The iid of the issue to mutate",
+              "description": "The IID of the issue to mutate",
               "type": {
                 "kind": "NON_NULL",
                 "name": null,