Fixed grammar line 53 (#31788)

guide/english/algorithms/string-matching-algorithms/kmp-algorithm/index.md

@@ -50,7 +50,7 @@ How to use lps[] to decide next positions (or to know a number of characters to
 -   When we see a  **mismatch**
     -   We know that characters pat[0..j-1] match with txt[i-j+1…i-1] (Note that j starts with 0 and increment it only when there is a match).
     -   We also know (from above definition) that lps[j-1] is count of characters of pat[0…j-1] that are both proper prefix and suffix.
-    -   From above two points, we can conclude that we do not need to match these lps[j-1] characters with txt[i-j…i-1] because we know that these characters will anyway match. Let us consider above example to understand this.
+    -   From the above two points, we can conclude that we do not need to match these lps[j-1] characters with txt[i-j…i-1] because we know that these characters will anyway match. Let us consider above example to understand this.
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 ### Code Of KMP Algorithm in C++