Fix some spelling mistakes

Thanks to LDj3SNuD for spotting these

Ryujinx.Graphics.Gpu/Image/FormatTable.cs

@@ -190,7 +190,7 @@ namespace Ryujinx.Graphics.Gpu.Image
         };
 
         /// <summary>
-        /// Try getting the texture format from a encoded format integer from the Maxwell texture descriptor.
+        /// Try getting the texture format from an encoded format integer from the Maxwell texture descriptor.
         /// </summary>
         /// <param name="encoded">The encoded format integer from the texture descriptor</param>
         /// <param name="isSrgb">Indicates if the format is a sRGB format</param>
@@ -204,7 +204,7 @@ namespace Ryujinx.Graphics.Gpu.Image
         }
 
         /// <summary>
-        /// Try getting the vertex attribute format from a encoded format integer from Maxwell attribute registers.
+        /// Try getting the vertex attribute format from an encoded format integer from Maxwell attribute registers.
         /// </summary>
         /// <param name="encoded">The encoded format integer from the attribute registers</param>
         /// <param name="format">The output vertex attribute format</param>

Ryujinx.Graphics.Gpu/Image/Pool.cs

@@ -6,7 +6,7 @@ namespace Ryujinx.Graphics.Gpu.Image
     /// <summary>
     /// Represents a pool of GPU resources, such as samplers or textures.
     /// </summary>
-    /// <typeparam name="T">GPU resource type</typeparam>
+    /// <typeparam name="T">Type of the GPU resource</typeparam>
     abstract class Pool<T> : IDisposable
     {
         protected const int DescriptorSize = 0x20;
@@ -57,7 +57,7 @@ namespace Ryujinx.Graphics.Gpu.Image
 
         /// <summary>
         /// Synchronizes host memory with guest memory.
-        /// This causes a invalidation of pool entries,
+        /// This causes invalidation of pool entries,
         /// if a modification of entries by the CPU is detected.
         /// </summary>
         public void SynchronizeMemory()

Ryujinx.Graphics.Gpu/Image/Texture.cs

@@ -365,7 +365,7 @@ namespace Ryujinx.Graphics.Gpu.Image
         /// This causes the texture data to be written back to guest memory.
         /// If the texture was written by the GPU, this includes all modification made by the GPU
         /// up to this point.
-        /// Be aware that this is a expensive operation, avoid calling it unless strictly needed.
+        /// Be aware that this is an expensive operation, avoid calling it unless strictly needed.
         /// This may cause data corruption if the memory is already being used for something else on the CPU side.
         /// </summary>
         public void Flush()

Ryujinx.Graphics.Gpu/Image/TextureBindingInfo.cs

@@ -15,7 +15,7 @@ namespace Ryujinx.Graphics.Gpu.Image
 
         /// <summary>
         /// Shader texture handle.
-        /// This is a index into the texture constant buffer.
+        /// This is an index into the texture constant buffer.
         /// </summary>
         public int Handle { get; }
 

Ryujinx.Graphics.Gpu/Image/TextureManager.cs

@@ -245,7 +245,7 @@ namespace Ryujinx.Graphics.Gpu.Image
         }
 
         /// <summary>
-        /// Tries to find a existing texture, or create a new one if not found.
+        /// Tries to find an existing texture, or create a new one if not found.
         /// </summary>
         /// <param name="copyTexture">Copy texture to find or create</param>
         /// <returns>The texture</returns>
@@ -298,7 +298,7 @@ namespace Ryujinx.Graphics.Gpu.Image
         }
 
         /// <summary>
-        /// Tries to find a existing texture, or create a new one if not found.
+        /// Tries to find an existing texture, or create a new one if not found.
         /// </summary>
         /// <param name="colorState">Color buffer texture to find or create</param>
         /// <param name="samplesInX">Number of samples in the X direction, for MSAA</param>
@@ -381,7 +381,7 @@ namespace Ryujinx.Graphics.Gpu.Image
         }
 
         /// <summary>
-        /// Tries to find a existing texture, or create a new one if not found.
+        /// Tries to find an existing texture, or create a new one if not found.
         /// </summary>
         /// <param name="dsState">Depth-stencil buffer texture to find or create</param>
         /// <param name="size">Size of the depth-stencil texture</param>
@@ -430,7 +430,7 @@ namespace Ryujinx.Graphics.Gpu.Image
         }
 
         /// <summary>
-        /// Tries to find a existing texture, or create a new one if not found.
+        /// Tries to find an existing texture, or create a new one if not found.
         /// </summary>
         /// <param name="info">Texture information of the texture to be found or created</param>
         /// <param name="flags">The texture search flags, defines texture comparison rules</param>

Ryujinx.Graphics.Gpu/Image/TexturePoolCache.cs

@@ -18,7 +18,7 @@ namespace Ryujinx.Graphics.Gpu.Image
         /// <summary>
         /// Constructs a new instance of the texture pool.
         /// </summary>
-        /// <param name="context"></param>
+        /// <param name="context">GPU context that the texture pool belongs to</param>
         public TexturePoolCache(GpuContext context)
         {
             _context = context;