Fix a few typos

README

@@ -18,7 +18,7 @@ DESCRIPTION
        directory that matches ALL of the regexes given on the command line.
 
 OPTIONS
-       -c     restrict matches to subdirectories of the current directory.
+       -c     restrict matches to subdirectories of the current directory
 
        -h     show a brief help message
 
@@ -68,8 +68,8 @@ NOTES
        multiplied by 0.99. Entries with a rank lower than 1 are forgotten.
 
    Frecency:
-       Frecency is a portmantaeu of 'recent' and 'frequency'. It is a weighted
-       rank  that  depends on how often and how recently something occured. As
+       Frecency is a portmanteau of 'recent' and 'frequency'. It is a weighted
+       rank  that  depends on how often and how recently something occurred. As
        far as I know, Mozilla came up with the term.
 
        To z, a directory that has low ranking but has been  accessed  recently

z.1

@@ -18,7 +18,7 @@ directory that matches ALL of the regexes given on the command line.
 OPTIONS
 .TP
 \fB\-c\fR
-restrict matches to subdirectories of the current directory.
+restrict matches to subdirectories of the current directory
 .TP
 \fB\-h\fR
 show a brief help message
@@ -95,8 +95,8 @@ the sum of ranks is greater than 6000, all ranks are multiplied by 0.99. Entries
 with a rank lower than 1 are forgotten.
 .SS
 Frecency:
-Frecency is a portmantaeu of 'recent' and 'frequency'. It is a weighted rank
-that depends on how often and how recently something occured. As far as I
+Frecency is a portmanteau of 'recent' and 'frequency'. It is a weighted rank
+that depends on how often and how recently something occurred. As far as I
 know, Mozilla came up with the term.
 .P
 To \fBz\fR, a directory that has low ranking but has been accessed recently