Fix four occorrences of a typo ("arugment") in the Javadoc comments

include/boost/static_string/static_string.hpp

@@ -775,7 +775,7 @@ to_static_wstring_float_impl(double value) noexcept
       // circuit evaluation will ensure that the
       // second operand is not evaluated on conforming
       // implementations.
-      long long num_written =
+      int num_written =
           std::swprintf(buffer, N + 1, L"%f", value);
       if (num_written < 0 ||
           num_written > narrow)
@@ -834,7 +834,7 @@ to_static_wstring_float_impl(long double value) noexcept
       // circuit evaluation will ensure that the
       // second operand is not evaluated on conforming
       // implementations.
-      long long num_written =
+      int num_written =
           std::swprintf(buffer, N + 1, L"%Lf", value);
       if (num_written < 0 ||
           num_written > narrow)
@@ -3733,8 +3733,8 @@ public:
       `{data() + pos, std::min(count, size() - pos))`.
 
       @param pos The index to being the substring at. The
-      default arugment for this parameter is `0`.
-      @param count The length of the substring. The default arugment
+      default argument for this parameter is `0`.
+      @param count The length of the substring. The default argument
       for this parameter is @ref npos.
 
       @throw std::out_of_range `pos > size()`
@@ -3764,8 +3764,8 @@ public:
       to `{data() + pos, std::min(count, size() - pos))`.
 
       @param pos The index to being the substring at. The
-      default arugment for this parameter is `0`.
-      @param count The length of the substring. The default arugment
+      default argument for this parameter is `0`.
+      @param count The length of the substring. The default argument
       for this parameter is @ref npos.
 
       @throw std::out_of_range `pos > size()`