Fix typo

Author: mborland

doc/modules/ROOT/pages/basics.adoc

@@ -71,7 +71,7 @@ NOTE: Due to the differences in decimal and binary floating point numbers there
 
 == Fundamental Operations
 
-The fundamental operations of numerical type (e.g. `>`, `==`, `+`, etc.) are overloaded.
+The fundamental operations of numerical types (e.g. `>`, `==`, `+`, etc.) are overloaded.
 
 [source, c++]
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