Many typos and grammar fixes from dan1982 on the higan forums.

docs/concepts/game-folders.md

@@ -53,7 +53,7 @@ higan can use a larger number of files per game.
 For example,
 higan's low-level emulation of Super Famicom co-processors
 often requires [separate firmware files][firmware].
-higan's [MSU-1 support][msu1]
+higan's [MSU-1 feature][msu1]
 supports up to 99 audio tracks per game,
 and higan supports up to 133 save-states per game.
 Thus,

docs/concepts/game-library.md

@@ -6,7 +6,7 @@ it creates or updates
 the corresponding game folder in the game library.
 When you use the console sub-menu items
 in [higan's Library menu](../interface/higan.md#the-library-menu),
-it higan shows you the games for that console
+higan shows you the games for that console
 that are already in the library.
 
 Inside the game library folder
@@ -57,7 +57,7 @@ Moving the game library
 -----------------------
 
 Moving the game library is a little complicated,
-because there's two parts to it:
+because there are two parts to it:
 telling icarus where to put imported games,
 and telling higan where to find them.
 

docs/concepts/manifests.md

@@ -98,7 +98,7 @@ and homebrew that was never on a physical cartridge to begin with.
 For these games,
 heuristics will always be needed as a fallback,
 but at least if the heuristics are wrong
-the can be overridden.
+they can be overridden.
 
 Ignoring manifests
 ------------------

docs/faq.md

@@ -88,7 +88,7 @@ for the audio and video drivers to catch up
 if [Synchronize Audio](interface/higan.md#the-settings-menu)
 and [video synchronization][vsync]
 are enabled, respectively.
-If games are running way too fast, here's some things to check:
+If games are running way too fast, here are some things to check:
 
   - Make sure "Synchronize Audio" is ticked in
     [the Settings menu](interface/higan.md#the-settings-menu)
@@ -101,7 +101,7 @@ If games are running way too fast, here's some things to check:
         tick "Mute Audio" in
         [the Settings menu](interface/higan.md#the-settings-menu)
   - If you can't connect speakers or headphones to your computer,
-    you did but it didn't help,
+    or you did but it didn't help,
     try enabling the secret [video synchronization][vsync] option.
 
 [vsync]: #i-see-tearing-when-a-game-scrolls-how-can-i-enable-vsync

docs/guides/drivers.md

@@ -4,7 +4,7 @@ displaying video,
 playing audio,
 and accepting input from game controllers.
 Or rather,
-there's many standards,
+there are many standards,
 and different ones work best
 on different computers.
 Therefore,

docs/guides/import.md

@@ -376,7 +376,7 @@ to turn off your Super Famicom,
 insert a game into slot A,
 and try again.
 If you chose a cartridge for slot A,
-higan will yet open another
+higan will open yet another
 filesystem browser
 to let you choose a mini-cartridge for slot B.
 If you press "Cancel" at this point,
@@ -431,7 +431,7 @@ so it needs a boot ROM:
 
 To import the SGB base cartridge,
 you must copy the required firmware file
-into the same folder.
+into the same folder as the base cartridge.
 Then you may import it just like
 [a regular game](#regular-games).
 

docs/guides/shaders.md

@@ -12,7 +12,7 @@ The available video shaders are listed in
 the "Video Shaders" sub-menu of
 [the Settings menu](../interface/higan.md#the-settings-menu).
 Which shaders are available depends on
-[video driver](drivers.md#video) higan is configured to use.
+the [video driver](drivers.md#video) higan is configured to use.
 Most drivers only support these shaders:
 
   - **None**
@@ -27,8 +27,7 @@ Most drivers only support these shaders:
   - **Blur**
     draws each computer pixel according to
     the weighted average colour
-    of the four nearest console pixels.
-    averaging the colours of the four nearest console pixels,
+    of the four nearest console pixels,
     sometimes called "bilinear" scaling.
     This produces unnaturally blurry images.
 

docs/interface/higan-settings.md

@@ -125,7 +125,7 @@ how higan reproduces
 the emulated console's audio output.
 
 **Driver**
-settings affect the
+settings affect
 the current [Audio driver](../guides/drivers.md).
 
   - **Device** allows you to choose