Doc cleanup

src/types/mod.rs

@@ -138,7 +138,7 @@ macro_rules! make_postgres_type {
                 }
             }
 
-            /// The kind of this type.
+            /// Returns the kind of this type.
             pub fn kind(&self) -> &Kind {
                 match *self {
                     $(
@@ -151,7 +151,7 @@ macro_rules! make_postgres_type {
                 }
             }
 
-            /// The schema of this type.
+            /// Returns the schema of this type.
             pub fn schema(&self) -> &str {
                 match *self {
                     Type::Other(ref u) => u.schema(),