update default floating values to match current values in release

Author: CKolkey

README.md

@@ -131,8 +131,8 @@ neogit.setup {
   -- Floating window style 
   floating = {
     relative = "editor",
-    width = 0.5,
-    height = 0.5,
+    width = 0.8,
+    height = 0.7,
     style = "minimal",
     border = "rounded",
   },

doc/neogit.txt

@@ -158,8 +158,8 @@ to Neovim users.
     -- Floating window style 
     floating = {
       relative = "editor",
-      width = 0.5,
-      height = 0.5,
+      width = 0.8,
+      height = 0.7,
       style = "minimal",
       border = "rounded",
     },

lua/neogit/config.lua

@@ -404,8 +404,8 @@ function M.get_default_values()
     kind = "tab",
     floating = {
       relative = "editor",
-      width = 0.5,
-      height = 0.5,
+      width = 0.8,
+      height = 0.7,
       style = "minimal",
       border = "rounded",
     },