fix spelling errors (#55)

Co-authored-by: MiracleDx <dongxiang886@gmail.com>
diff --git a/metadata.graphqls b/metadata.graphqls
index 0c747ea..1c051e5 100644
--- a/metadata.graphqls
+++ b/metadata.graphqls
@@ -68,7 +68,7 @@
 }
 
 extend type Query {
-    # Normal service related metainfo 
+    # Normal service related meta info 
     getAllServices(duration: Duration!, group: String): [Service!]!
     searchServices(duration: Duration!, keyword: String!): [Service!]!
     searchService(serviceCode: String!): Service
@@ -76,7 +76,7 @@
     # Fetch all services of Browser type
     getAllBrowserServices(duration: Duration!): [Service!]!
 
-    # Service intance query
+    # Service instance query
     getServiceInstances(duration: Duration!, serviceId: ID!): [ServiceInstance!]!
 
     # Endpoint query
diff --git a/metric.graphqls b/metric.graphqls
index 7370eef..f04c2bb 100644
--- a/metric.graphqls
+++ b/metric.graphqls
@@ -75,7 +75,7 @@
     # Query the type of metrics including multiple values, and format them as multiple linears.
     # The seq of these multiple lines base on the calculation func in OAL
     # Such as, should us this to query the result of func percentile(50,75,90,95,99) in OAL,
-    # then five lines will be responsed, p50 is the first element of return value.
+    # then five lines will be responded, p50 is the first element of return value.
     getMultipleLinearIntValues(metric: MetricCondition!, numOfLinear: Int!, duration: Duration!): [IntValues!]!
     getSubsetOfMultipleLinearIntValues(metric: MetricCondition!, linearIndex: [Int!]!, duration: Duration!): [IntValues!]!
     getThermodynamic(metric: MetricCondition!, duration: Duration!): Thermodynamic
diff --git a/metrics-v2.graphqls b/metrics-v2.graphqls
index cd89230..d1cf512 100644
--- a/metrics-v2.graphqls
+++ b/metrics-v2.graphqls
@@ -35,7 +35,7 @@
 
 input Entity {
     # 1. scope=All, no name is required.
-    # 2. scope=Service, ServiceInstance and Endpoint, set neccessary serviceName/serviceInstanceName/endpointName
+    # 2. scope=Service, ServiceInstance and Endpoint, set necessary serviceName/serviceInstanceName/endpointName
     # 3. Scope=ServiceRelation, ServiceInstanceRelation and EndpointRelation
     #    serviceName/serviceInstanceName/endpointName is/are the source(s)
     #    destServiceName/destServiceInstanceName/destEndpointName is/are destination(s)
diff --git a/profile.graphqls b/profile.graphqls
index cf32673..19d4054 100644
--- a/profile.graphqls
+++ b/profile.graphqls
@@ -84,7 +84,7 @@
     logs: [ProfileTaskLog!]!
 }
 
-# Profile thread stack anayze tree element
+# Profile thread stack analyze tree element
 type ProfileStackElement {
     # work for tree building, id matches multiple parentId
     id: ID!
diff --git a/topology.graphqls b/topology.graphqls
index 6084255..48a76b1 100644
--- a/topology.graphqls
+++ b/topology.graphqls
@@ -44,7 +44,7 @@
     # 1. The service provider/middleware tech, such as: Tomcat, SpringMVC
     # 2. Conjectural Service, e.g. MySQL, Redis, Kafka
     type: String
-    # It is a conjuecture node or real node, to represent a service or endpoint.
+    # It is a conjecture node or real node, to represent a service or endpoint.
     isReal: Boolean!
 }
 
@@ -62,7 +62,7 @@
     # 1. The service provider/middleware tech, such as: Tomcat, SpringMVC
     # 2. Conjectural Service, e.g. MySQL, Redis, Kafka
     type: String
-    # It is a conjuecture node or real node, to represent an instance.
+    # It is a conjecture node or real node, to represent an instance.
     isReal: Boolean!
 }
 
diff --git a/trace.graphqls b/trace.graphqls
index 57eb2e9..a67e96e 100644
--- a/trace.graphqls
+++ b/trace.graphqls
@@ -40,7 +40,7 @@
     endpointName: String
     # The time range of traces started
     queryDuration: Duration
-    # The mix time of trace
+    # The min time of trace
     minTraceDuration: Int
     # The max time of trace
     maxTraceDuration: Int