chore(gengapic): fix typo on internal interface documentation (#1031)

.gitignore

@@ -32,3 +32,4 @@ bazel-*
 
 # VS Code workspace
 *.code-workspace
+.vscode/

internal/gengapic/client_init.go

@@ -68,7 +68,7 @@ func (g *generator) clientOptions(serv *descriptor.ServiceDescriptorProto, servN
 func (g *generator) internalClientIntfInit(serv *descriptor.ServiceDescriptorProto, servName string) error {
 	p := g.printf
 
-	p("// internal%sClient is an interface that defines the methods availaible from %s.", servName, g.apiName)
+	p("// internal%sClient is an interface that defines the methods available from %s.", servName, g.apiName)
 	p("type internal%sClient interface {", servName)
 	p("Close() error")
 	p("setGoogleClientInfo(...string)")

internal/gengapic/testdata/custom_op_init.want

@@ -1,4 +1,4 @@
-// internalClient is an interface that defines the methods availaible from Awesome Foo API.
+// internalClient is an interface that defines the methods available from Awesome Foo API.
 type internalClient interface {
 	Close() error
 	setGoogleClientInfo(...string)

internal/gengapic/testdata/deprecated_client_init.want

@@ -1,4 +1,4 @@
-// internalClient is an interface that defines the methods availaible from Awesome Foo API.
+// internalClient is an interface that defines the methods available from Awesome Foo API.
 type internalClient interface {
 	Close() error
 	setGoogleClientInfo(...string)

internal/gengapic/testdata/empty_client_init.want

@@ -1,4 +1,4 @@
-// internalClient is an interface that defines the methods availaible from Awesome Foo API.
+// internalClient is an interface that defines the methods available from Awesome Foo API.
 type internalClient interface {
 	Close() error
 	setGoogleClientInfo(...string)

internal/gengapic/testdata/foo_client_init.want

@@ -1,4 +1,4 @@
-// internalFooClient is an interface that defines the methods availaible from Awesome Foo API.
+// internalFooClient is an interface that defines the methods available from Awesome Foo API.
 type internalFooClient interface {
 	Close() error
 	setGoogleClientInfo(...string)

internal/gengapic/testdata/foo_rest_client_init.want

@@ -1,4 +1,4 @@
-// internalFooClient is an interface that defines the methods availaible from Awesome Foo API.
+// internalFooClient is an interface that defines the methods available from Awesome Foo API.
 type internalFooClient interface {
 	Close() error
 	setGoogleClientInfo(...string)

internal/gengapic/testdata/lro_client_init.want

@@ -1,4 +1,4 @@
-// internalFooClient is an interface that defines the methods availaible from Awesome Foo API.
+// internalFooClient is an interface that defines the methods available from Awesome Foo API.
 type internalFooClient interface {
 	Close() error
 	setGoogleClientInfo(...string)