[mlir][gpu] Trim trailing whitespace in dialect docs. NFC.

Author: kuhar

mlir/include/mlir/Dialect/GPU/IR/GPUBase.td

@@ -52,14 +52,14 @@ def GPU_Dialect : Dialect {
     /// Returns the numeric value used to identify the private memory address
     /// space.
     static AddressSpace getPrivateAddressSpace() { return AddressSpace::Private; }
-    
-    /// Return true if the given MemRefType has an address space that matches 
+
+    /// Return true if the given MemRefType has an address space that matches
     /// with the gpu::AddressSpaceAttr attribute with value 'workgroup`.
     static bool hasWorkgroupMemoryAddressSpace(MemRefType type);
 
-    /// Return true if the given Attribute is an gpu::AddressSpaceAttr 
+    /// Return true if the given Attribute is an gpu::AddressSpaceAttr
     /// attribute with value 'workgroup`.
-    static bool isWorkgroupMemoryAddressSpace(Attribute memorySpace);  
+    static bool isWorkgroupMemoryAddressSpace(Attribute memorySpace);
   }];
 
   let dependentDialects = ["arith::ArithDialect"];