Fix typos

Advanced/Nonstandard Analysis/parts/extensions.tex

@@ -52,7 +52,7 @@ An ordered field must satisfy the following properties:
 An ordered field that contains $\mathbb{R}$ is called an \textit{extension} of $\mathbb{R}$.
 
 \definition{}
-The \textit{Archimedian property} states the following: \par
+The \textit{Archimedean property} states the following: \par
 For all positive $x, y$, there exists an $n$ so that $nx \geq y$.
 
 \theorem{}
@@ -149,7 +149,9 @@ In an ordered field, the \textit{magnitude} of a number x is defined as follows:
 \end{equation*}
 
 \definition{}
-We say an element $\delta$ of an ordered field is \textit{infinitesimal} if $|nd| < 1$ for all $n \in \mathbb{Z^+}$. \par
+We say an element $\delta$ of an ordered field is \textit{infinitesimal} if
+$|nd| < 1$ % spell:disable-line
+for all $n \in \mathbb{Z^+}$. \par
 \note{Note that $\mathbb{Z}^+$ is a subset of any nonarchimedian extension of $\mathbb{R}$.} \par
 
 \vspace{2mm}