Fix typo

install.py

@@ -97,23 +97,23 @@
  version_path = f".ghidra-{version}"
 
 ghidra_home_path = os.path.join(Path.home(), ".ghidra", version_path)
-perferences_path = os.path.join(ghidra_home_path, "preferences")
+preferences_path = os.path.join(ghidra_home_path, "preferences")
 code_browser_path = os.path.join(ghidra_home_path, "tools", "_code_browser.tcd")
 code_browser_bak_path = os.path.join(ghidra_home_path, "tools", "_code_browser.tcd.bak")
 
 print(f"Using Ghidra home path: {ghidra_home_path}")
 
 # Check if the current L&f is system
 using_system = False
-with open(perferences_path, "r") as fp:
+with open(preferences_path, "r") as fp:
  for line in fp:
  if "LastLookAndFeel=System" in line:
  using_system = True
  break
 
 # Set the L&f to system
 if not using_system:
- with open(perferences_path, "a") as fp:
+ with open(preferences_path, "a") as fp:
  fp.write("LastLookAndFeel=System\n")
 
 # Backup the current tcd